15 Commits

Author SHA1 Message Date
pharpend 079009a13e [wip] now display user's camera
next tricky thing is connecting users
2026-02-24 10:40:43 -08:00
pharpend 484eea92e4 have call box 2026-02-12 20:54:58 -08:00
pharpend 08c0119ae0 have a roster and a whoami 2026-02-12 20:32:34 -08:00
pharpend db6d244cb6 finished code surgery
patient is comatose and is missing both testicles and eyeballs but is legally
alive
2026-02-12 19:31:08 -08:00
Peter Harpending 4a0e221790 Merge remote-tracking branch 'refs/remotes/origin/f-webrtc' into f-webrtc 2026-02-12 18:01:37 -08:00
Peter Harpending d348fe7cd1 Merge remote-tracking branch 'refs/remotes/origin/f-webrtc' into f-webrtc 2026-02-12 18:01:29 -08:00
pharpend ad5df4f550 merging 2026-02-12 17:57:29 -08:00
Peter Harpending b63130a061 stash 2026-02-12 10:14:16 -08:00
pharpend b871968f8c roster kind of sort of works 2026-02-09 21:11:53 -08:00
pharpend 6028bb5850 roster is broadcast 2026-02-09 20:48:43 -08:00
pharpend 25a775ee96 webrtc frontend can request username from backend 2026-02-09 16:24:33 -08:00
Peter Harpending b6436c84ee wip 2026-02-09 14:48:47 -08:00
pharpend cc95fc5829 webrtc 2026-02-09 12:54:45 -08:00
pharpend ce7b8a1ccd add webrtc grok demo 2026-02-04 21:59:37 -08:00
pharpend 8d5320e4e5 [works] cleanups, wfc service architecture
- now using zj as a dep instead of just having it locally
- put WFC into its own service tree

  this surgery is not complete, but it has been started and the repo is
  currently not in a botched state

- deleted orphan "wsp" (web socket process) module
2025-12-17 16:39:00 -08:00
21 changed files with 851 additions and 853 deletions
+5 -4
View File
@@ -4,10 +4,11 @@
{included_applications,[]},
{applications,[stdlib,kernel]},
{vsn,"0.2.0"},
{modules,[fd_cache,fd_httpd,fd_httpd_client,fd_httpd_client_man,
{modules,[fd_httpd,fd_httpd_client,fd_httpd_client_man,
fd_httpd_client_sup,fd_httpd_clients,fd_httpd_sfc,
fd_httpd_sfc_cache,fd_httpd_sfc_entry,fd_httpd_utils,
fd_sup,fd_wsp,fewd,qhl,qhl_ws,wfc,wfc_bm,wfc_eval,
wfc_eval_context,wfc_ltr,wfc_pp,wfc_read,wfc_sentence,
wfc_sftt,wfc_ttfuns,wfc_utils,wfc_word,zj]},
fd_sup,fd_wfcd,fd_wfcd_cache,fewd,qhl,qhl_ws,wfc,
wfc_bm,wfc_eval,wfc_eval_context,wfc_ltr,wfc_pp,
wfc_read,wfc_sentence,wfc_sftt,wfc_ttfuns,wfc_utils,
wfc_word,zj]},
{mod,{fewd,[]}}]}.
+1
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@@ -17,6 +17,7 @@
<ul>
<li><a href="/echo.html">Echo</a></li>
<li><a href="/webrtc.html">WebRTC</a></li>
<li><a href="/wfc.html">WFC</a></li>
</ul>
</div>
+1 -1
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@@ -1 +1 @@
{"version":3,"file":"libfewd.js","sourceRoot":"","sources":["../ts/libfewd.ts"],"names":[],"mappings":"AAAA;;;;GAIG;AAEH,OAAO,EACH,WAAW,EACX,qBAAqB,EACxB,CAAC;AAGF,SACA,WAAW,CACN,gBAAmC,EACnC,cAAsC,EACtC,UAAyB;IAG1B,+DAA+D;IAC/D,IAAI,gBAAgB,CAAC,OAAO,EAAE,CAAC;QAC3B,IAAI,aAAa,GAAW,cAAc,CAAC,YAAY,CAAC;QACxD,sCAAsC;QACtC,IAAI,aAAa,GAAG,UAAU;YAC1B,cAAc,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC,aAAa,CAAC,GAAG,IAAI,CAAC;;YAE3D,cAAc,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC,UAAU,CAAC,GAAG,IAAI,CAAC;IAChE,CAAC;AACL,CAAC;AAGD,SACA,qBAAqB,CAChB,gBAAmC,EACnC,cAAsC;IAGvC,IAAI,gBAAgB,CAAC,OAAO,EAAE,CAAC;QAC3B,mBAAmB;QACnB,cAAc,CAAC,SAAS,GAAG,cAAc,CAAC,YAAY,CAAC;IAC3D,CAAC;AACL,CAAC"}
{"version":3,"file":"libfewd.js","sourceRoot":"","sources":["../ts/libfewd.ts"],"names":[],"mappings":"AAAA;;;;GAIG;AAEH,OAAO,EACH,WAAW,EACX,qBAAqB,EACxB,CAAC;AAGF,SACA,WAAW,CACN,gBAAmC,EACnC,cAAsC,EACtC,UAAyB;IAG1B,+DAA+D;IAC/D,IAAI,gBAAgB,CAAC,OAAO,EAAE;QAC1B,IAAI,aAAa,GAAW,cAAc,CAAC,YAAY,CAAC;QACxD,sCAAsC;QACtC,IAAI,aAAa,GAAG,UAAU;YAC1B,cAAc,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC,aAAa,CAAC,GAAG,IAAI,CAAC;;YAE3D,cAAc,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC,UAAU,CAAC,GAAG,IAAI,CAAC;KAC/D;AACL,CAAC;AAGD,SACA,qBAAqB,CAChB,gBAAmC,EACnC,cAAsC;IAGvC,IAAI,gBAAgB,CAAC,OAAO,EAAE;QAC1B,mBAAmB;QACnB,cAAc,CAAC,SAAS,GAAG,cAAc,CAAC,YAAY,CAAC;KAC1D;AACL,CAAC"}
+22
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@@ -0,0 +1,22 @@
/**
* webrtc page script
*
* Author: Peter Harpending <peterharpending@qpq.swiss>
* Date: 2026-02-04
* Copyright: Copyright (c) 2026 QPQ AG
*
* Reference: https://git.qpq.swiss/QPQ-AG/research-megadoc/src/commit/c7c4592d4b21ad120145ef63334471a1a7ec1e60/paste/2026-02/grok-webrtc.html
*
* @module
*/
declare function main(): Promise<void>;
/**
* Try to get the user's camera
*
* tries to get screenshare if user camera not available for whatever reason
*
* chimps out if
* - not on https
* - user says no
*/
declare function getUserCamera(): Promise<MediaStream>;
+41
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@@ -0,0 +1,41 @@
"use strict";
/**
* webrtc page script
*
* Author: Peter Harpending <peterharpending@qpq.swiss>
* Date: 2026-02-04
* Copyright: Copyright (c) 2026 QPQ AG
*
* Reference: https://git.qpq.swiss/QPQ-AG/research-megadoc/src/commit/c7c4592d4b21ad120145ef63334471a1a7ec1e60/paste/2026-02/grok-webrtc.html
*
* @module
*/
main();
async function main() {
console.log('peepy');
let video = await getUserCamera();
console.log('poopy');
console.log('poopu');
let moi = document.getElementById('me');
moi.srcObject = video;
console.log('poopa');
}
/**
* Try to get the user's camera
*
* tries to get screenshare if user camera not available for whatever reason
*
* chimps out if
* - not on https
* - user says no
*/
async function getUserCamera() {
if (!(navigator.mediaDevices)) {
console.error('navigator.mediaDevices is null; user not on https or something');
}
let availableDevices = await navigator.mediaDevices.enumerateDevices();
console.log(availableDevices);
return await navigator.mediaDevices.getUserMedia({ video: true, audio: false });
// return await navigator.mediaDevices.getDisplayMedia();
}
//# sourceMappingURL=webrtc.js.map
+1
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@@ -0,0 +1 @@
{"version":3,"file":"webrtc.js","sourceRoot":"","sources":["../ts/webrtc.ts"],"names":[],"mappings":";AAAA;;;;;;;;;;GAUG;AAEH,IAAI,EAAE,CAAC;AAEP,KAAK,UACL,IAAI;IAIA,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IACrB,IAAI,KAAK,GAAsB,MAAM,aAAa,EAAE,CAAC;IACrD,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IACrB,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IACrB,IAAI,GAAG,GAAG,QAAQ,CAAC,cAAc,CAAC,IAAI,CAAqB,CAAC;IAC5D,GAAG,CAAC,SAAS,GAAG,KAAK,CAAC;IACtB,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;AACzB,CAAC;AAGD;;;;;;;;GAQG;AACH,KAAK,UACL,aAAa;IAIT,IAAI,CAAC,CAAC,SAAS,CAAC,YAAY,CAAC,EAAE;QAC3B,OAAO,CAAC,KAAK,CAAC,gEAAgE,CAAC,CAAC;KACnF;IAED,IAAI,gBAAgB,GAChB,MAAM,SAAS,CAAC,YAAY,CAAC,gBAAgB,EAAE,CAAC;IACpD,OAAO,CAAC,GAAG,CAAC,gBAAgB,CAAC,CAAC;IAE9B,OAAO,MAAM,SAAS,CAAC,YAAY,CAAC,YAAY,CAAC,EAAC,KAAK,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAC,CAAC,CAAC;IAC9E,yDAAyD;AAC7D,CAAC"}
+1 -1
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@@ -1 +1 @@
{"version":3,"file":"wfc.js","sourceRoot":"","sources":["../ts/wfc.ts"],"names":[],"mappings":"AAAA;;;;GAIG;AAEH,OAAO,KAAK,OAAO,MAAM,cAAc,CAAA;AAEvC,oEAAoE;AACpE,qBAAqB;AACrB,oEAAoE;AAEpE,IAAI,EAAE,CAAC;AAEP,SACA,IAAI;IAIA,IAAI,IAAI,GAAoC,QAAQ,CAAC,cAAc,CAAC,WAAW,CAA8B,CAAK;IAClH,IAAI,IAAI,GAAoC,QAAQ,CAAC,cAAc,CAAC,YAAY,CAAgC,CAAE;IAClH,IAAI,SAAS,GAA+B,QAAQ,CAAC,cAAc,CAAC,oBAAoB,CAAqB,CAAK;IAClH,IAAI,SAAS,GAA+B,QAAQ,CAAC,cAAc,CAAC,aAAa,CAA4B,CAAK;IAClH,IAAI,eAAe,GAAyB,GAAG,CAAC;IAGhD,IAAI,CAAC,gBAAgB,CAAC,SAAS,EAC3B,UAAS,CAAgB;QACrB,YAAY,CAAC,CAAC,EAAE,IAAI,EAAE,IAAI,EAAE,SAAS,EAAE,SAAS,EAAE,eAAe,CAAC,CAAC;IACvE,CAAC,CACJ,CAAC;AACN,CAAC;AAGD,yBAAyB;AACzB,KAAK,UACL,YAAY,CACP,GAA0B,EAC1B,IAA6B,EAC7B,IAAgC,EAChC,SAA6B,EAC7B,SAA6B,EAC7B,UAAmB;IAGpB,IAAI,GAAG,CAAC,GAAG,KAAK,OAAO,EAAE,CAAC;QACtB,yBAAyB;QACzB,GAAG,CAAC,cAAc,EAAE,CAAC;QACrB,gBAAgB;QAChB,IAAI,QAAQ,GAAa,IAAI,CAAC,KAAK,CAAC;QACpC,IAAI,OAAO,GAAc,QAAQ,CAAC,IAAI,EAAE,CAAC;QACzC,IAAI,QAAQ,GAAa,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC;QAC5C,2BAA2B;QAC3B,IAAI,QAAQ,EAAE,CAAC;YACX,cAAc;YACd,IAAI,CAAC,KAAK,GAAG,EAAE,CAAC;YAEhB,gBAAgB;YAChB,IAAI,CAAC,KAAK,IAAI,IAAI,GAAG,OAAO,GAAG,IAAI,CAAC;YACpC,IAAI,CAAC,MAAM,GAAG,KAAK,CAAC;YAEpB,2BAA2B;YAC3B,IAAI,MAAM,GAAY,MAAM,WAAW,CAAC,OAAO,CAAC,CAAC;YAEjD,IAAI,MAAM,CAAC,EAAE;gBACT,IAAI,CAAC,KAAK,IAAI,MAAM,CAAC,MAAM,CAAC;;gBAE5B,IAAI,CAAC,KAAK,IAAI,MAAM,CAAC,KAAK,CAAC;YAC/B,IAAI,CAAC,KAAK,IAAI,IAAI,CAAC;YAEnB,cAAc;YACd,OAAO,CAAC,WAAW,CAAC,SAAS,EAAE,IAAI,EAAE,UAAU,CAAC,CAAC;YACjD,OAAO,CAAC,qBAAqB,CAAC,SAAS,EAAE,IAAI,CAAC,CAAC;QACnD,CAAC;IACL,CAAC;AACL,CAAC;AAaD,SACA,MAAM,CACD,SAAmB,EACnB,QAAkB;IAGnB,IAAG,CAAC,SAAS;QACT,MAAM,IAAI,KAAK,CAAC,QAAQ,CAAC,CAAC;AAClC,CAAC;AAGD,KAAK,UACL,WAAW,CACN,SAAkB;IAGnB,IAAI,YAAY,GAAG,EAAC,KAAK,EAAE,SAAS,EAAC,CAAC;IACtC,IAAI,YAAY,GAAG,IAAI,CAAC,SAAS,CAAC,YAAY,CAAC,CAAC;IAEhD,IAAI,WAAW,GAAI,EAAC,MAAM,EAAG,MAAM;QACf,OAAO,EAAE,EAAC,cAAc,EAAE,kBAAkB,EAAC;QAC7C,IAAI,EAAK,YAAY,EAAC,CAAC;IAE3C,mEAAmE;IACnE,4CAA4C;IAC5C,IAAI,MAAM,GAAW,EAAC,EAAE,EAAM,KAAK;QACb,KAAK,EAAG,kCAAkC,EAAC,CAAC;IAElE,IAAI,CAAC;QACD,IAAI,QAAQ,GAAc,MAAM,KAAK,CAAC,QAAQ,EAAE,WAAW,CAAC,CAAC;QAC7D,IAAI,QAAQ,CAAC,EAAE;YACX,MAAM,GAAG,MAAM,QAAQ,CAAC,IAAI,EAAY,CAAC;aACxC,CAAC;YACF,OAAO,CAAC,GAAG,CAAC,oBAAoB,EAAE,QAAQ,CAAC,CAAC;YAC5C,MAAM,GAAG,EAAC,EAAE,EAAE,KAAK,EAAE,KAAK,EAAE,mBAAmB,EAAC,CAAC;QACrD,CAAC;IACL,CAAC;IACD,OAAO,CAAM,EAAE,CAAC;QACZ,OAAO,CAAC,GAAG,CAAC,gBAAgB,EAAE,CAAC,CAAC,CAAC;QACjC,MAAM,GAAG,EAAC,EAAE,EAAE,KAAK,EAAE,KAAK,EAAE,eAAe,EAAC,CAAC;IACjD,CAAC;IAED,OAAO,MAAM,CAAC;AAClB,CAAC"}
{"version":3,"file":"wfc.js","sourceRoot":"","sources":["../ts/wfc.ts"],"names":[],"mappings":"AAAA;;;;GAIG;AAEH,OAAO,KAAK,OAAO,MAAM,cAAc,CAAA;AAEvC,oEAAoE;AACpE,qBAAqB;AACrB,oEAAoE;AAEpE,IAAI,EAAE,CAAC;AAEP,SACA,IAAI;IAIA,IAAI,IAAI,GAAoC,QAAQ,CAAC,cAAc,CAAC,WAAW,CAA8B,CAAK;IAClH,IAAI,IAAI,GAAoC,QAAQ,CAAC,cAAc,CAAC,YAAY,CAAgC,CAAE;IAClH,IAAI,SAAS,GAA+B,QAAQ,CAAC,cAAc,CAAC,oBAAoB,CAAqB,CAAK;IAClH,IAAI,SAAS,GAA+B,QAAQ,CAAC,cAAc,CAAC,aAAa,CAA4B,CAAK;IAClH,IAAI,eAAe,GAAyB,GAAG,CAAC;IAGhD,IAAI,CAAC,gBAAgB,CAAC,SAAS,EAC3B,UAAS,CAAgB;QACrB,YAAY,CAAC,CAAC,EAAE,IAAI,EAAE,IAAI,EAAE,SAAS,EAAE,SAAS,EAAE,eAAe,CAAC,CAAC;IACvE,CAAC,CACJ,CAAC;AACN,CAAC;AAGD,yBAAyB;AACzB,KAAK,UACL,YAAY,CACP,GAA0B,EAC1B,IAA6B,EAC7B,IAAgC,EAChC,SAA6B,EAC7B,SAA6B,EAC7B,UAAmB;IAGpB,IAAI,GAAG,CAAC,GAAG,KAAK,OAAO,EAAE;QACrB,yBAAyB;QACzB,GAAG,CAAC,cAAc,EAAE,CAAC;QACrB,gBAAgB;QAChB,IAAI,QAAQ,GAAa,IAAI,CAAC,KAAK,CAAC;QACpC,IAAI,OAAO,GAAc,QAAQ,CAAC,IAAI,EAAE,CAAC;QACzC,IAAI,QAAQ,GAAa,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC;QAC5C,2BAA2B;QAC3B,IAAI,QAAQ,EAAE;YACV,cAAc;YACd,IAAI,CAAC,KAAK,GAAG,EAAE,CAAC;YAEhB,gBAAgB;YAChB,IAAI,CAAC,KAAK,IAAI,IAAI,GAAG,OAAO,GAAG,IAAI,CAAC;YACpC,IAAI,CAAC,MAAM,GAAG,KAAK,CAAC;YAEpB,2BAA2B;YAC3B,IAAI,MAAM,GAAY,MAAM,WAAW,CAAC,OAAO,CAAC,CAAC;YAEjD,IAAI,MAAM,CAAC,EAAE;gBACT,IAAI,CAAC,KAAK,IAAI,MAAM,CAAC,MAAM,CAAC;;gBAE5B,IAAI,CAAC,KAAK,IAAI,MAAM,CAAC,KAAK,CAAC;YAC/B,IAAI,CAAC,KAAK,IAAI,IAAI,CAAC;YAEnB,cAAc;YACd,OAAO,CAAC,WAAW,CAAC,SAAS,EAAE,IAAI,EAAE,UAAU,CAAC,CAAC;YACjD,OAAO,CAAC,qBAAqB,CAAC,SAAS,EAAE,IAAI,CAAC,CAAC;SAClD;KACJ;AACL,CAAC;AAaD,SACA,MAAM,CACD,SAAmB,EACnB,QAAkB;IAGnB,IAAG,CAAC,SAAS;QACT,MAAM,IAAI,KAAK,CAAC,QAAQ,CAAC,CAAC;AAClC,CAAC;AAGD,KAAK,UACL,WAAW,CACN,SAAkB;IAGnB,IAAI,YAAY,GAAG,EAAC,KAAK,EAAE,SAAS,EAAC,CAAC;IACtC,IAAI,YAAY,GAAG,IAAI,CAAC,SAAS,CAAC,YAAY,CAAC,CAAC;IAEhD,IAAI,WAAW,GAAI,EAAC,MAAM,EAAG,MAAM;QACf,OAAO,EAAE,EAAC,cAAc,EAAE,kBAAkB,EAAC;QAC7C,IAAI,EAAK,YAAY,EAAC,CAAC;IAE3C,mEAAmE;IACnE,4CAA4C;IAC5C,IAAI,MAAM,GAAW,EAAC,EAAE,EAAM,KAAK;QACb,KAAK,EAAG,kCAAkC,EAAC,CAAC;IAElE,IAAI;QACA,IAAI,QAAQ,GAAc,MAAM,KAAK,CAAC,QAAQ,EAAE,WAAW,CAAC,CAAC;QAC7D,IAAI,QAAQ,CAAC,EAAE;YACX,MAAM,GAAG,MAAM,QAAQ,CAAC,IAAI,EAAY,CAAC;aACxC;YACD,OAAO,CAAC,GAAG,CAAC,oBAAoB,EAAE,QAAQ,CAAC,CAAC;YAC5C,MAAM,GAAG,EAAC,EAAE,EAAE,KAAK,EAAE,KAAK,EAAE,mBAAmB,EAAC,CAAC;SACpD;KACJ;IACD,OAAO,CAAM,EAAE;QACX,OAAO,CAAC,GAAG,CAAC,gBAAgB,EAAE,CAAC,CAAC,CAAC;QACjC,MAAM,GAAG,EAAC,EAAE,EAAE,KAAK,EAAE,KAAK,EAAE,eAAe,EAAC,CAAC;KAChD;IAED,OAAO,MAAM,CAAC;AAClB,CAAC"}
+54
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@@ -0,0 +1,54 @@
/**
* webrtc page script
*
* Author: Peter Harpending <peterharpending@qpq.swiss>
* Date: 2026-02-04
* Copyright: Copyright (c) 2026 QPQ AG
*
* Reference: https://git.qpq.swiss/QPQ-AG/research-megadoc/src/commit/c7c4592d4b21ad120145ef63334471a1a7ec1e60/paste/2026-02/grok-webrtc.html
*
* @module
*/
main();
async function
main
()
: Promise<void>
{
console.log('peepy');
let video : MediaStream = await getUserCamera();
console.log('poopy');
console.log('poopu');
let moi = document.getElementById('me') as HTMLVideoElement;
moi.srcObject = video;
console.log('poopa');
}
/**
* Try to get the user's camera
*
* tries to get screenshare if user camera not available for whatever reason
*
* chimps out if
* - not on https
* - user says no
*/
async function
getUserCamera
()
: Promise<MediaStream>
{
if (!(navigator.mediaDevices)) {
console.error('navigator.mediaDevices is null; user not on https or something');
}
let availableDevices: Array<MediaDeviceInfo> =
await navigator.mediaDevices.enumerateDevices();
console.log(availableDevices);
return await navigator.mediaDevices.getUserMedia({video: true, audio: false});
// return await navigator.mediaDevices.getDisplayMedia();
}
+27
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@@ -0,0 +1,27 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>FEWD: voice chat demo</title>
<link rel="stylesheet" href="/css/default.css">
</head>
<body>
<div id="titlebar">
<div class="content">
<a href="/" class="tb-home">Home</a>
</div>
</div>
<div class="content">
<h1 class="content-title">FEWD: webrtc demo</h1>
<div class="content-body">
<textarea disabled id="wfc-output"></textarea>
<video id="me" autoplay muted></video>
</div>
</div>
<script src="/js/dist/webrtc.js"></script>
</body>
</html>
+166
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@@ -0,0 +1,166 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Super Simple WebRTC Manual Signaling</title>
<style>
body { font-family: sans-serif; margin: 20px; }
textarea { width: 100%; height: 90px; font-family: monospace; }
button { margin: 6px 0; padding: 8px 16px; }
video { max-width: 320px; border: 1px solid #444; margin: 8px; background: #000; }
</style>
</head>
<body>
<h2>WebRTC 1:1 test (copy-paste signaling)</h2>
<div>
<button id="btnCreateOffer">1. Create Offer (Peer A)</button>
<button id="btnSetRemoteOffer">2. Paste offer → Set remote description</button><br>
<textarea id="offerSdp" placeholder="Offer SDP will appear here (Peer A) or paste offer here (Peer B)"></textarea>
</div>
<div style="margin-top: 24px;">
<button id="btnCreateAnswer">3. Create Answer (Peer B)</button>
<button id="btnSetRemoteAnswer">4. Paste answer → Set remote description</button><br>
<textarea id="answerSdp" placeholder="Answer SDP will appear here (Peer B) or paste answer here (Peer A)"></textarea>
</div>
<div style="margin-top: 20px;">
<button id="btnAddIce">Add ICE candidate manually (if needed)</button><br>
<textarea id="iceInput" placeholder="Paste remote ICE candidate here"></textarea>
<div id="iceLog"></div>
</div>
<div style="margin-top: 20px;">
<video id="localVideo" autoplay playsinline muted></video>
<video id="remoteVideo" autoplay playsinline></video>
</div>
<pre id="status">Status: ready</pre>
<script>
// ────────────────────────────────────────────────
const $ = s => document.querySelector(s);
const status = $('pre#status');
const offerArea = $('#offerSdp');
const answerArea = $('#answerSdp');
const iceInput = $('#iceInput');
const iceLog = $('#iceLog');
let pc = null;
let localStream = null;
// ────────────────────────────────────────────────
async function initPeerConnection() {
if (pc) pc.close();
pc = new RTCPeerConnection({
iceServers: [
{ urls: "stun:stun.l.google.com:19302" },
{ urls: "stun:stun.stunprotocol.org" }
]
});
pc.onicecandidate = e => {
if (e.candidate) {
console.log("New ICE candidate:", e.candidate);
iceLog.innerHTML += "<div style='color:#c33'>→ " + e.candidate.candidate + "</div>";
}
};
pc.oniceconnectionstatechange = () => {
status.textContent = "ICE state: " + pc.iceConnectionState;
};
pc.ontrack = e => {
console.log("ontrack", e);
const remoteVideo = $('#remoteVideo');
remoteVideo.srcObject = e.streams[0];
status.textContent = "ICE state: " + pc.iceConnectionState + " (receiving media!)";
};
// Add local stream if we have camera/mic
if (localStream) {
localStream.getTracks().forEach(track => {
pc.addTrack(track, localStream);
});
}
}
// ────────────────────────────────────────────────
async function startLocalCamera() {
try {
localStream = await navigator.mediaDevices.getUserMedia({
video: true,
audio: false // change to true if you want audio too
});
$('#localVideo').srcObject = localStream;
} catch (err) {
console.error("Camera access failed", err);
status.textContent = "Camera access failed: " + err.message;
}
}
// ────────────────────────────────────────────────
$('#btnCreateOffer').onclick = async () => {
await initPeerConnection();
await startLocalCamera();
const offer = await pc.createOffer();
await pc.setLocalDescription(offer);
offerArea.value = JSON.stringify(pc.localDescription, null, 2);
status.textContent = "Offer created copy and send to peer B";
};
// ────────────────────────────────────────────────
$('#btnCreateAnswer').onclick = async () => {
await initPeerConnection();
await startLocalCamera();
const offer = JSON.parse(offerArea.value);
await pc.setRemoteDescription(offer);
const answer = await pc.createAnswer();
await pc.setLocalDescription(answer);
answerArea.value = JSON.stringify(pc.localDescription, null, 2);
status.textContent = "Answer created copy and send to peer A";
};
// ────────────────────────────────────────────────
$('#btnSetRemoteOffer').onclick = async () => {
if (!pc) await initPeerConnection();
const remote = JSON.parse(offerArea.value);
await pc.setRemoteDescription(remote);
status.textContent = "Remote offer set";
};
// ────────────────────────────────────────────────
$('#btnSetRemoteAnswer').onclick = async () => {
const remote = JSON.parse(answerArea.value);
await pc.setRemoteDescription(remote);
status.textContent = "Remote answer set waiting for ICE/media";
};
// ────────────────────────────────────────────────
$('#btnAddIce').onclick = async () => {
if (!iceInput.value.trim()) return;
try {
const candidate = new RTCIceCandidate(JSON.parse(iceInput.value));
await pc.addIceCandidate(candidate);
iceLog.innerHTML += "<div style='color:#3a3'>← added ICE candidate</div>";
iceInput.value = "";
} catch (err) {
console.error("Bad ICE candidate", err);
}
};
// Optional: auto-start camera when page loads
// startLocalCamera();
</script>
</body>
</html>
+127
View File
@@ -0,0 +1,127 @@
/**
* webrtc page script
*
* Author: Peter Harpending <peterharpending@qpq.swiss>
* Date: 2026-02-04
* Copyright: Copyright (c) 2026 QPQ AG
*
* Reference: https://git.qpq.swiss/QPQ-AG/research-megadoc/src/commit/c7c4592d4b21ad120145ef63334471a1a7ec1e60/paste/2026-02/grok-webrtc.html
*
* @module
*/
type state =
{whoami: string,
roster: Array<string>};
let st: state =
{whoami: "",
roster: []};
main();
async function
main
()
: Promise<void>
{
// start websocket immediately
let ws: WebSocket;
let init = document.getElementById('init') as HTMLDivElement;
let init_join = document.getElementById('init-join') as HTMLButtonElement;
// handle button click
init_join.addEventListener('click',
function() {
init.hidden = true;
document.getElementById('run')!.hidden = false;
ws = new WebSocket('/ws/webrtc');
ws.onopen = function(e) { console.log('ws open'); };
ws.onclose = function(e) { console.warn('ws closed'); };
ws.onerror = function(e) { console.error('ws error:', e); };
ws.onmessage =
function(e) {
// console.log('ws message:', e.data);
let message = JSON.parse(e.data) as ws_msg;
handle_ws_msg(message);
};
}
);
}
type ws_msg = ["whoami", string]
| ["roster", Array<string>];
function
handle_ws_msg
(message: ws_msg)
: void
{
console.log('message from server:', message);
switch(message[0]) {
case "whoami":
st.whoami = message[1];
break;
case "roster":
st.roster = (message[1] as Array<string>);
break;
default:
console.warn("unknown message", message);
}
render_state();
}
function
ws_send_json
(ws : WebSocket,
x : any)
: void
{
let s: string = JSON.stringify(x, undefined, 4);
console.log('sending:\n', s);
ws.send(s);
}
function
render_state
()
: void
{
console.log('st', st);
// whoami
document.getElementById('whoami')!.innerText = st.whoami;
//
let roster_ul = document.getElementById('roster-ul') as HTMLUListElement;
let newChildren : Array<HTMLElement> = [];
for (let nick of st.roster) {
if (!(nick === st.whoami)) {
let li = nickkk(nick);
newChildren.push(li);
}
}
roster_ul.replaceChildren(...newChildren);
}
function
nickkk
(nick: string)
: HTMLElement
{
let li = document.createElement('li');
li.innerText += nick;
li.innerText += ' ';
let call_a = document.createElement('button');
call_a.innerText = 'call';
li.appendChild(call_a);
return li;
}
+8 -1
View File
@@ -23,6 +23,12 @@ start_link() ->
init([]) ->
RestartStrategy = {one_for_one, 1, 60},
WebRTC = {fd_httpd_webrtc,
{fd_httpd_webrtc, start_link, []},
permanent,
5000,
worker,
[fd_httpd_webrtc]},
FileCache = {fd_httpd_sfc,
{fd_httpd_sfc, start_link, []},
permanent,
@@ -35,5 +41,6 @@ init([]) ->
5000,
supervisor,
[fd_httpd_clients]},
Children = [FileCache, Clients],
Children = [WebRTC, FileCache, Clients],
%Children = [FileCache, Clients],
{ok, {RestartStrategy, Children}}.
+107 -38
View File
@@ -135,9 +135,19 @@ loop(Parent, Debug, State = #s{socket = Socket, next = Next0}) ->
Received = <<Next0/binary, Message/binary>>,
case qhl:parse(Socket, Received) of
{ok, Req, Next1} ->
Next2 = handle_request(Socket, Req, Next1),
%% FIXME: unfuck received logic here
%% handle_request should eventually call back into
%% loop/3 or close the socket
%%
%% also loop/3 should be loop/1, because we need to pass
%% the state down the callchains
Next2 =
case Next1 of
none -> <<>>;
Bin -> Bin
end,
NewState = State#s{next = Next2},
loop(Parent, Debug, NewState);
handle_request(Req, Parent, Debug, NewState);
Error ->
%% should trigger bad request
tell(error, "~p QHL parse error: ~tp", [?LINE, Error]),
@@ -210,40 +220,44 @@ system_replace_state(StateFun, State) ->
%%% http request handling
-spec handle_request(Sock, Request, Received) -> NewReceived
when Sock :: gen_tcp:socket(),
Request :: request(),
Received :: binary(),
NewReceived :: binary().
-spec handle_request(Request, Parent, Debug, State) -> no_return()
when Request :: request(),
Parent :: pid(),
Debug :: [sys:dbg_opt()],
State :: state().
handle_request(Sock, R = #request{method = M, path = P}, Received) when M =/= undefined, P =/= undefined ->
tell("~tp ~tp ~ts", [self(), M, P]),
route(Sock, M, P, R, Received).
handle_request(Req = #request{method = Method, path = Path}, Parent, Debug, State)
when Method =/= undefined,
Path =/= undefined ->
tell("~tp ~tp ~ts", [self(), Method, Path]),
route(Method, Path, Req, Parent, Debug, State).
-spec route(Sock, Method, Route, Request, Received) -> NewReceived
when Sock :: gen_tcp:socket(),
Method :: get | post,
Route :: binary(),
Request :: request(),
Received :: binary(),
NewReceived :: binary().
route(Sock, get, Route, Request, Received) ->
% hardcode routes first
route(get, Route, Request, P, D, S = #s{socket = Sock}) ->
case Route of
<<"/ws/echo">> -> ws_echo(Sock, Request) , Received;
<<"/">> -> route_static(Sock, <<"/index.html">>) , Received;
_ -> route_static(Sock, Route) , Received
<<"/ws/echo">> -> ws_echo(Sock, Request);
<<"/ws/webrtc">> ->
ws_webrtc(Request, S);
<<"/">> ->
route_static(Sock, <<"/index.html">>),
loop(P, D, S);
_ ->
route_static(Sock, Route),
loop(P, D, S)
end;
route(Sock, post, Route, Request, Received) ->
route(post, Route, Request, P, D, S = #s{socket = Sock}) ->
case Route of
<<"/wfcin">> -> wfcin(Sock, Request) , Received;
_ -> fd_httpd_utils:http_err(Sock, 404) , Received
<<"/wfcin">> ->
wfcin(Sock, Request),
loop(P, D, S);
_ ->
fd_httpd_utils:http_err(Sock, 404),
loop(P, D, S)
end;
route(Sock, _, _, _, Received) ->
route(_, _, _, P, D, S = #s{socket = Sock}) ->
fd_httpd_utils:http_err(Sock, 404),
Received.
loop(P, D, S).
@@ -279,6 +293,69 @@ respond_static(Sock, not_found) ->
fd_httpd_utils:http_err(Sock, 404).
%% ------------------------------
%% webrtc
%% ------------------------------
ws_webrtc(Request, State = #s{socket = Sock}) ->
try
case qhl_ws:handshake(Request) of
{ok, Response} ->
fd_httpd_utils:respond(Sock, Response),
% wait for username
ok = fd_httpd_webrtc:join(),
ws_webrtc_loop(State);
Error ->
tell("ws_webrtc: error: ~tp", [Error]),
fd_httpd_utils:http_err(Sock, 400),
exit(bad_request)
end
catch
exit:Y:Z ->
tell("~tp ws_webrtc: dying peacefully: ~tp:~tp", [self(), Y, Z]),
gen_tcp:close(Sock);
error:Y:Z ->
tell(error, "~tp ws_webrtc: ERROR ~tp:~tp", [self(), Y, Z]),
fd_httpd_utils:http_err(Sock, 500),
error(internal_server_error)
end.
-spec ws_webrtc_loop(state()) -> no_return().
% we have no tcp bytes waiting to be parsed
ws_webrtc_loop(State = #s{socket = Socket, next = <<>>}) ->
ok = inet:setopts(Socket, [{active, once}]),
receive
{tcp, Socket, Message} ->
NewState = State#s{next = Message},
ws_webrtc_loop(NewState);
{webrtc, Message} ->
ok = ws_webrtc_relay(Socket, s2c, Message),
ws_webrtc_loop(State);
{tcp_closed, Socket} ->
ok = tell("~p Socket closed, retiring.~n", [self()]),
exit(normal)
end;
% we have TCP bytes sitting and waiting to be parsed
ws_webrtc_loop(State = #s{socket = Sock, next = Recv}) ->
{ok, Message, NewRecv} = qhl_ws:recv_json(Sock, Recv, 5000),
ok = ws_webrtc_relay(Sock, c2s, Message),
ws_webrtc_loop(State#s{next = NewRecv}).
% relay
% message is a zj:value()
ws_webrtc_relay(Socket, Direction, ZJValue) ->
tell("~p ws_webrtc_relay ~p: ~p", [self(), Direction, ZJValue]),
case Direction of
c2s -> fd_httpd_webrtc:hi(ZJValue);
s2c -> qhl_ws:send_json(Socket, ZJValue)
end,
ok.
%% ------------------------------
%% echo
%% ------------------------------
@@ -348,7 +425,7 @@ wfcin(Sock, #request{enctype = json,
{fd_httpd_utils:jsbad(ErrorMessage), Ctx0}
end,
% update cache with new context
ok = fd_cache:set(Cookie, NewCtx),
ok = fd_wfcd_cache:set(Cookie, NewCtx),
Body = zj:encode(RespObj),
Response = #response{headers = [{"content-type", "application/json"},
{"set-cookie", ["wfc=", Cookie]}],
@@ -366,17 +443,9 @@ wfcin(Sock, Request) ->
Context :: wfc_eval_context:context().
ctx(#{<<"wfc">> := Cookie}) ->
case fd_cache:query(Cookie) of
case fd_wfcd_cache:query(Cookie) of
{ok, Context} -> {Cookie, Context};
error -> {Cookie, wfc_eval_context:default()}
end;
ctx(_) ->
{fd_httpd_utils:new_cookie(), wfc_eval_context:default()}.
+165
View File
@@ -0,0 +1,165 @@
% @doc webrtc peer pool
-module(fd_httpd_webrtc).
-behavior(gen_server).
%% api (caller context)
-export([
join/0, hi/1
]).
% startup/gen_server callbacks
-export([
% caller context
start_link/0,
% process context
init/1, handle_call/3, handle_cast/2, handle_info/2,
code_change/3, terminate/2
]).
-include("$zx_include/zx_logger.hrl").
-record(u, {pid :: pid()}).
-type user() :: #u{}.
-record(s, {roster = [] :: [user()]}).
-type state() :: #s{}.
%%-----------------------------------------------------------------------------
%% caller context
%%-----------------------------------------------------------------------------
start_link() ->
gen_server:start_link({local, ?MODULE}, ?MODULE, none, []).
-spec join() -> ok | {error, any()}.
join() ->
gen_server:call(?MODULE, join).
-spec hi(Message) -> ok
when Message :: zj:value().
hi(Message) ->
gen_server:cast(?MODULE, {hi, self(), Message}).
%%-----------------------------------------------------------------------------
%% process context
%%-----------------------------------------------------------------------------
%% gen_server callbacks
init(none) ->
tell("starting fd_httpd_webrtc", []),
InitState = #s{},
{ok, InitState}.
handle_call(join, _From = {PID, _Tag}, State) ->
{Reply, NewState} = do_join(PID, State),
{reply, Reply, NewState};
handle_call(Unexpected, From, State) ->
tell("~tp: unexpected call from ~tp: ~tp", [?MODULE, Unexpected, From]),
{noreply, State}.
handle_cast(Unexpected, State) ->
tell("~tp: unexpected cast: ~tp", [?MODULE, Unexpected]),
{noreply, State}.
handle_info({'DOWN', _Ref, process, PID, _Reason}, State) ->
NewState = do_down(PID, State),
{noreply, NewState};
handle_info(Unexpected, State) ->
tell("~tp: unexpected info: ~tp", [?MODULE, Unexpected]),
{noreply, State}.
code_change(_, State, _) ->
{ok, State}.
terminate(_, _) ->
ok.
%%---------------------
%% doers
%%---------------------
-spec do_join(PID, State) -> {Reply, NewState}
when PID :: pid(),
State :: state(),
Reply :: ok
| {error, any()},
NewState :: state().
% @private join a user to a pool
do_join(PID, State = #s{roster = Users}) ->
% see if pid is already there
case lists:keymember(PID, #u.pid, Users) of
true -> {error, already_joined};
false -> do_join2(PID, State)
end.
do_join2(PID, State = #s{roster = Users}) ->
monitor(process, PID),
NewUser = #u{pid = PID},
NewRoster = usort([NewUser | Users]),
NewState = State#s{roster = NewRoster},
ok = whisper(whoami, PID),
ok = gossip(roster, NewState),
{ok, NewState}.
usort(Users) ->
lists:keysort(#u.pid, Users).
-spec do_down(PID, State) -> NewState
when PID :: pid(),
State :: state(),
NewState :: state().
% @private handle a user dying
do_down(PID, State = #s{roster = Users}) ->
% remove from roster
NewUsers = lists:keydelete(PID, #u.pid, Users),
NewState = State#s{roster = NewUsers},
% broadcast username
ok = gossip(roster, NewState),
NewState.
% @doc send a message to a specific person
whisper(whoami, PID) ->
PID ! {webrtc, ["whoami", pidstr(PID)]},
ok.
% @doc send a message to everyone
gossip(roster, State = #s{roster = Us}) ->
Pids = [pidstr(PID) || #u{pid = PID} <- Us],
gossip_json(["roster", Pids], State).
pidstr(PID) ->
unicode:characters_to_list(io_lib:format("~tp", [PID])).
-spec gossip_json(zj:value(), state()) -> ok.
% @private gossip a message to everyone
gossip_json(Message, #s{roster = Users}) ->
GossipTo =
fun(#u{pid = PID}) ->
PID ! {webrtc, Message}
end,
lists:foreach(GossipTo, Users).
+5 -5
View File
@@ -36,17 +36,17 @@ start_link() ->
init([]) ->
RestartStrategy = {one_for_one, 1, 60},
Cache = {fd_cache,
{fd_cache, start_link, []},
WFCd = {fd_wfcd,
{fd_wfcd, start_link, []},
permanent,
5000,
worker,
[fd_cache]},
supervisor,
[fd_wfcd]},
Httpd = {fd_httpd,
{fd_httpd, start_link, []},
permanent,
5000,
supervisor,
[fd_httpd]},
Children = [Cache, Httpd],
Children = [WFCd, Httpd],
{ok, {RestartStrategy, Children}}.
+33
View File
@@ -0,0 +1,33 @@
-module(fd_wfcd).
-vsn("0.2.0").
-behaviour(supervisor).
-author("Peter Harpending <peterharpending@qpq.swiss>").
-copyright("Peter Harpending <peterharpending@qpq.swiss>").
-license("BSD-2-Clause-FreeBSD").
-export([start_link/0]).
-export([init/1]).
-spec start_link() -> {ok, pid()}.
%% @private
%% This supervisor's own start function.
start_link() ->
supervisor:start_link({local, ?MODULE}, ?MODULE, []).
-spec init([]) -> {ok, {supervisor:sup_flags(), [supervisor:child_spec()]}}.
%% @private
%% The OTP init/1 function.
init([]) ->
RestartStrategy = {one_for_one, 1, 60},
Cache = {fd_wfcd_cache,
{fd_wfcd_cache, start_link, []},
permanent,
5000,
worker,
[fd_wfcd_cache]},
Children = [Cache],
{ok, {RestartStrategy, Children}}.
+1 -1
View File
@@ -1,5 +1,5 @@
% @doc storing map #{cookie := Context}
-module(fd_cache).
-module(fd_wfcd_cache).
-vsn("0.2.0").
-behavior(gen_server).
-105
View File
@@ -1,105 +0,0 @@
% @doc Abstracts a web socket into a process
%
% hands the TCP socket over to this process, also this process does the
% handshake.
%
% this process sends back `{ws, self(), Message: qhl_ws:ws_msg()}'
%
% for each websocket message it gets
-module(fd_wsp).
-vsn("0.2.0").
-behavior(gen_server).
-export_type([
]).
-export([
%% caller context
%handshake/0,
start_link/3,
%% process context
init/1, handle_call/3, handle_cast/2, handle_info/2,
code_change/3, terminate/2
]).
-include("http.hrl").
-include("$zx_include/zx_logger.hrl").
-record(s, {socket :: gen_tcp:socket()}).
-type state() :: #s{}.
%%-----------------------------------------------------------------------------
%% caller context
%%-----------------------------------------------------------------------------
-spec start_link(Socket, HandshakeReq, Received) -> Result
when Socket :: gen_tcp:socket(),
HandshakeReq :: request(),
Received :: binary(),
Result :: {ok, pid()}
| {error, term()}.
% @doc
% starts a websocket and hands control of socket over to child process
start_link(Socket, HandshakeReq, Received) ->
case gen_server:start_link(?MODULE, [Socket, HandshakeReq, Received], []) of
{ok, PID} ->
gen_tcp:controlling_process(Socket, PID),
{ok, PID};
Error ->
Error
end.
%%-----------------------------------------------------------------------------
%% process context below this line
%%-----------------------------------------------------------------------------
%% gen_server callbacks
init([Socket, HandshakeReq, Received]) ->
log("~p:~p init", [?MODULE, self()]),
case qhl_ws:handshake(HandshakeReq) of
{ok, Response} ->
ok = fd_http_utils:respond(Socket, Response),
InitState = #s{socket = Socket},
{ok, InitState};
Error ->
tell("~p:~p websocket handshake err: ~p", [?MODULE, self(), Error]),
fd_http_utils:http_err(Socket, 400),
Error
end.
handle_call(Unexpected, From, State) ->
tell("~tp: unexpected call from ~tp: ~tp", [?MODULE, Unexpected, From]),
{noreply, State}.
handle_cast(Unexpected, State) ->
tell("~tp: unexpected cast: ~tp", [?MODULE, Unexpected]),
{noreply, State}.
handle_info({tcp, Sock, Bytes}, State = #s{socket = Sock}) ->
{noreply, State};
handle_info(Unexpected, State) ->
tell("~tp: unexpected info: ~tp", [?MODULE, Unexpected]),
{noreply, State}.
code_change(_, State, _) ->
{ok, State}.
terminate(_, _) ->
ok.
%%-----------------------------------------------------------------------------
%% internals
%%-----------------------------------------------------------------------------
+85 -2
View File
@@ -16,7 +16,9 @@
%% porcelain
handshake/1,
recv/3, recv/4,
send/2
recv_strict/3, recv_json/3,
send/2,
send_dwim/2, send_json/2
]).
-include("http.hrl").
@@ -259,6 +261,54 @@ response_token(ChallengeToken) when is_binary(ChallengeToken) ->
base64:encode(Sha1).
-spec recv_json(Socket, Received, TimeoutMS) -> Result
when Socket :: gen_tcp:socket(),
Received :: binary(),
TimeoutMS :: non_neg_integer(),
Result :: {ok, zj:value(), Remainder}
| {error, Reason},
Remainder :: binary(),
Reason :: any().
% @doc
% asserts response is text
recv_json(Sock, Recv, TimeoutMS) ->
case recv_strict(Sock, Recv, TimeoutMS) of
{ok, {Type, Payload}, NewRecv} when Type =:= text orelse
Type =:= binary ->
case zj:decode(Payload) of
{ok, Value} ->
io:format("~p value: ~p~n", [self(), Value]),
{ok, Value, NewRecv};
Error -> {error, {zj_decode, Error}}
end;
Error ->
Error
end.
-spec recv_strict(Socket, Received, TimeoutMS) -> Result
when Socket :: gen_tcp:socket(),
Received :: binary(),
TimeoutMS :: non_neg_integer(),
Result :: {ok, Message, Remainder}
| {error, Reason},
Message :: ws_msg(),
Remainder :: binary(),
Reason :: any().
% @doc
% Almost equivalent to recv/3, but asserts resulting frames are empty
recv_strict(Sock, Recv, TimeoutMS) ->
case recv(Sock, Recv, TimeoutMS) of
{ok, Message, [], Remainder} ->
{ok, Message, Remainder};
Illegal = {ok, _, _NonEmptyFrames, _} ->
{error, {bad_frame_stack, Illegal}};
Error ->
Error
end.
-spec recv(Socket, Received, TimeoutMS) -> Result
when Socket :: gen_tcp:socket(),
@@ -604,10 +654,15 @@ recv_frame(Frame = #frame{payload_length = Len, payload = none}, Sock, Received,
%% factoring this out into a function to reduce repetition
recv_frame_await(Frame, Sock, Received, Timeout) ->
io:format("~p called: recv_frame_await(~p, ~p, ~p, ~p)~n",
[self(), Frame, Sock, Received, Timeout]),
case inet:setopts(Sock, [{active, once}]) of
ok ->
receive
{tcp, Sock, Bin} -> recv_frame(Frame, Sock, <<Received/bits, Bin/binary>>, Timeout);
{tcp, Sock, Bin} ->
io:format("~p calling: recv_frame(~p, ~p, ~p, ~p)~n",
[self(),Frame, Sock, <<Received/bits, Bin/binary>>, Timeout]),
recv_frame(Frame, Sock, <<Received/bits, Bin/binary>>, Timeout);
{tcp_closed, Sock} -> {error, tcp_closed};
{tcp_error, Sock, Reason} -> {error, {tcp_error, Reason}}
after Timeout ->
@@ -618,6 +673,34 @@ recv_frame_await(Frame, Sock, Received, Timeout) ->
end.
send_json(Socket, X) ->
send_dwim(Socket, {json, X}).
-spec send_dwim(Socket, Message) -> Result
when Socket :: gen_tcp:socket(),
Message :: string()
| binary()
| {json, zj:value()}
| ws_msg(),
Result :: ok
| {error, Reason},
Reason :: any().
% @doc
% equivalent to send/2 but assumes iolists/strings are meant to be `text`, and
% naked binaries are meant to be `binary`
%
% lists are assumed to be unicode iolists and are converted to strings via
% unicode:characters_to_list
%
% json is encoded as text and sent as such
% @end
send_dwim(Socket, X) when is_list(X) -> send(Socket, {text, X});
send_dwim(Socket, X) when is_binary(X) -> send(Socket, {binary, X});
send_dwim(Socket, {json, X}) -> send(Socket, {text, zj:encode(X)});
send_dwim(Socket, {Type, Payload}) -> send(Socket, {Type, Payload}).
-spec send(Socket, Message) -> Result
when Socket :: gen_tcp:socket(),
-694
View File
@@ -1,694 +0,0 @@
%%% @doc
%%% ZJ: The tiny JSON parser
%%%
%%% This module exports four functions and accepts no options.
%%% @end
-module(zj).
-vsn("0.2.0").
-author("Craig Everett <zxq9@zxq9.com>").
-copyright("Craig Everett <zxq9@zxq9.com>").
-license("MIT").
-export([encode/1, decode/1,
binary_encode/1, binary_decode/1]).
-export_type([value/0, bin_value/0]).
-type value() :: string()
| number()
| true
| false
| undefined
| [value()]
| #{string() := value()}.
-type bin_value() :: binary()
| number()
| true
| false
| undefined
| [bin_value()]
| #{binary() := bin_value()}.
%%% Character constants
-define(BKSPC, 16#08).
-define(H_TAB, 16#09).
-define(NEW_L, 16#0A).
-define(FORMF, 16#0C).
-define(CAR_R, 16#0D).
-define(SPACE, 16#20).
%%% Interface Functions
-spec encode(term()) -> string().
%% @doc
%% Take any convertable Erlang term and convert it to a JSON string.
%%
%% As JSON can only satirically be referred to as "a serialization format", it is
%% almost impossible to map any interesting data between Erlang (or any other language)
%% and JSON. For example, tuples do not exist in JSON, so converting an Erlang tuple
%% turns it into a list (a JSON array). Atoms also do not exist, so atoms other than
%% the ternay logic values `true', `false' and `null' become strings (those three
%% remain as atoms, with the added detail that JSON `null' maps to Erlang
%% `undefined').
%%
%% Unless care is taken to pick types that JSON can accurately express (integers,
%% floats, strings, maps, lists, ternary logic atoms) it is not possible to guarantee
%% (or even reasonable to expect) that `Term == decode(encode(Term))' will be true.
%%
%% This function crashes when it fails. Things that will cause a crash are trying to
%% convert non-UTF-8 binaries to strings, use non-string values as object keys,
%% encode an unaligned bitstring, etc.
%%
%% Note that Erlang terms are converted as type primitives, meaning that compound
%% functional structures like GB-trees, dicts, sets, etc. will wind up having their
%% underlying structures converted as-is which is almost never what you want. It is
%% usually best to reduce compound values down to primitives (lists or maps) before
%% running encode.
%%
%% The only unsupported Erlang pritmitive is bitstrings. Care has NOT been taken to
%% ensure separation between actual binary data and binaries that are supposed to be
%% interpreted as strings. The same is true of deep list data: it just comes out raw
%% unless you flatten or convert it to a utf8 string with the unicode module.
%%
%% NOTE: If you need a serialization format that is less ambiguous and expresses more
%% types consider using BERT (language-independent implementations of Erlang external
%% binary format) instead: http://bert-rpc.org
encode(true) -> "true";
encode(false) -> "false";
encode(undefined) -> "null";
encode([]) -> "[]";
encode(T) when is_atom(T) -> quote(atom_to_list(T));
encode(T) when is_float(T) -> float_to_list(T);
encode(T) when is_integer(T) -> integer_to_list(T);
encode(T) when is_pid(T) -> quote(pid_to_list(T));
encode(T) when is_port(T) -> quote(port_to_list(T));
encode(T) when is_function(T) -> quote(erlang:fun_to_list(T));
encode(T) when is_reference(T) -> quote(ref_to_list(T));
encode(T) -> unicode:characters_to_list(encode_value(T)).
-spec decode(Stream) -> Result
when Stream :: unicode:chardata(),
Result :: {ok, value()}
| {error, Parsed, Remainder}
| {incomplete, Parsed, Remainder},
Parsed :: value(),
Remainder :: unicode:chardata()
| unicode:external_chardata()
| binary().
%% @doc
%% Take any IO data acceptable to the unicode module and return a parsed data structure.
%% In the event of a parsing error whatever part of the structure could be successfully
%% parsed will be returned along with the remainder of the string. Note that the string
%% remainder may have been changed to a different form by unicode:characters_to_list/1.
%% If the unicode library itself runs into a problem performing the initial conversion
%% its error return (`error' or `incomplete') will be returned directly.
decode(Stream) ->
case unicode:characters_to_list(Stream) of
E when is_tuple(E) -> E;
[16#FEFF | String] -> parse(seek(String));
String -> parse(seek(String))
end.
-spec binary_encode(term()) -> binary().
%% @doc
%% A strict encoding routine that works very similarly to `encode/1' but with a few
%% differences:
%% ```
%% - Lists and Strings are firmly separated:
%% ALL lists are lists of discrete values, never strings.
%% ALL binaries are always UTF-8 strings.
%% An Erlang string or io_list will be encoded as JSON array.
%% - This function generates a UTF-8 binary, not a list.
%% - The burden is on the user to ensure that io_lists are collapsed to unicode
%% binaries via `unicode:characters_to_binary/1' before passing in string values.
%% - Erlang strings (lists) are still accepted as map/object keys.
%% '''
%%
%% NOTE:
%% Most cases are better served by `encode/1', as most code deals in strings and not
%% arrays of integer values.
%%
%% Using this function requires a little bit more work up front (because ununified
%% io_list() data will always be interpreted as a JSON array), but provides a way to
%% reliably generate lists or strings in an unambiguous way in the special case where
%% your code is generating both strings and lists of integer values that may overlap
%% with valid UTF-8 codepoint values.
binary_encode(true) -> <<"true">>;
binary_encode(false) -> <<"false">>;
binary_encode(undefined) -> <<"null">>;
binary_encode(T) when is_atom(T) -> <<"\"", (atom_to_binary(T, utf8))/binary, "\"">>;
binary_encode(T) when is_float(T) -> float_to_binary(T);
binary_encode(T) when is_integer(T) -> integer_to_binary(T);
binary_encode(T) when is_pid(T) -> <<"\"", (list_to_binary(pid_to_list(T)))/binary, "\"">>;
binary_encode(T) when is_port(T) -> <<"\"", (list_to_binary(port_to_list(T)))/binary, "\"">>;
binary_encode(T) when is_function(T) -> <<"\"", (list_to_binary(erlang:fun_to_list(T)))/binary, "\"">>;
binary_encode(T) when is_reference(T) -> <<"\"", (list_to_binary(ref_to_list(T)))/binary, "\"">>;
binary_encode(T) -> unicode:characters_to_binary(b_encode_value(T)).
-spec binary_decode(Stream) -> Result
when Stream :: unicode:chardata(),
Result :: {ok, bin_value()}
| {error, Parsed, Remainder}
| {incomplete, Parsed, Remainder},
Parsed :: bin_value(),
Remainder :: binary().
%% @doc
%% Almost identical in behavior to `decode/1' except this returns strings as binaries
%% and arrays of integers as Erlang lists (which may also be valid strings if the
%% values are valid UTF-8 codepoints).
%%
%% NOTE:
%% This function returns map keys as binaries
binary_decode(Stream) ->
case b_decode(Stream) of
{error, Part, Rest} -> {error, Part, unicode:characters_to_binary(Rest)};
Result -> Result
end.
%%% Encoding Functions
encode_value(true) -> "true";
encode_value(false) -> "false";
encode_value(undefined) -> "null";
encode_value(T) when is_atom(T) -> quote(atom_to_list(T));
encode_value(T) when is_float(T) -> float_to_list(T);
encode_value(T) when is_integer(T) -> integer_to_list(T);
encode_value(T) when is_binary(T) -> maybe_string(T);
encode_value(T) when is_list(T) -> maybe_array(T);
encode_value(T) when is_map(T) -> pack_object(T);
encode_value(T) when is_tuple(T) -> pack_array(tuple_to_list(T));
encode_value(T) when is_pid(T) -> quote(pid_to_list(T));
encode_value(T) when is_port(T) -> quote(port_to_list(T));
encode_value(T) when is_function(T) -> quote(erlang:fun_to_list(T));
encode_value(T) when is_reference(T) -> quote(ref_to_list(T)).
maybe_string(T) ->
L = binary_to_list(T),
true = io_lib:printable_unicode_list(L),
quote(L).
maybe_array(T) ->
case io_lib:printable_unicode_list(T) of
true -> quote(T);
false -> pack_array(T)
end.
quote(T) -> [$" | escape(T)].
escape([]) -> [$"];
escape([$\b | T]) -> [$\\, $b | escape(T)];
escape([$\f | T]) -> [$\\, $f | escape(T)];
escape([$\n | T]) -> [$\\, $n | escape(T)];
escape([$\r | T]) -> [$\\, $r | escape(T)];
escape([$\t | T]) -> [$\\, $t | escape(T)];
escape([$\" | T]) -> [$\\, $" | escape(T)];
escape([$\\ | T]) -> [$\\, $\\ | escape(T)];
escape([H | T]) -> [H | escape(T)].
pack_array([]) -> "[]";
pack_array([H | []]) -> [$[, encode_value(H), $]];
pack_array([H | T]) -> [$[, encode_value(H), $,, encode_array(T), $]].
encode_array([H | []]) -> encode_value(H);
encode_array([H | T]) -> [encode_value(H), $,, encode_array(T)].
pack_object(M) ->
case maps:to_list(M) of
[] ->
"{}";
[{K, V} | T] when is_list(K) ->
true = io_lib:printable_unicode_list(K),
Init = [$", K, $", $:, encode_value(V)],
[${, lists:foldl(fun pack_object/2, Init, T), $}];
[{K, V} | T] when is_binary(K) ->
Key = unicode:characters_to_list(K),
true = io_lib:printable_unicode_list(Key),
Init = [$", Key, $", $:, encode_value(V)],
[${, lists:foldl(fun pack_object/2, Init, T), $}];
[{K, V} | T] when is_float(K) ->
Key = float_to_list(K),
Init = [$", Key, $", $:, encode_value(V)],
[${, lists:foldl(fun pack_object/2, Init, T), $}];
[{K, V} | T] when is_integer(K) ->
Key = integer_to_list(K),
Init = [$", Key, $", $:, encode_value(V)],
[${, lists:foldl(fun pack_object/2, Init, T), $}];
[{K, V} | T] when is_atom(K) ->
Init = [$", atom_to_list(K), $", $:, encode_value(V)],
[${, lists:foldl(fun pack_object/2, Init, T), $}]
end.
pack_object({K, V}, L) when is_list(K) ->
true = io_lib:printable_unicode_list(K),
[$", K, $", $:, encode_value(V), $, | L];
pack_object({K, V}, L) when is_binary(K) ->
Key = unicode:characters_to_list(K),
true = io_lib:printable_unicode_list(Key),
[$", Key, $", $:, encode_value(V), $, | L];
pack_object({K, V}, L) when is_float(K) ->
Key = float_to_list(K),
[$", Key, $", $:, encode_value(V), $, | L];
pack_object({K, V}, L) when is_integer(K) ->
Key = integer_to_list(K),
[$", Key, $", $:, encode_value(V), $, | L];
pack_object({K, V}, L) when is_atom(K) ->
[$", atom_to_list(K), $", $:, encode_value(V), $, | L].
b_encode_value(true) -> <<"true">>;
b_encode_value(false) -> <<"false">>;
b_encode_value(undefined) -> <<"null">>;
b_encode_value(T) when is_atom(T) -> [$", atom_to_binary(T, utf8), $"];
b_encode_value(T) when is_float(T) -> float_to_binary(T);
b_encode_value(T) when is_integer(T) -> integer_to_binary(T);
b_encode_value(T) when is_binary(T) -> [$", b_maybe_string(T), $"];
b_encode_value(T) when is_list(T) -> b_pack_array(T);
b_encode_value(T) when is_map(T) -> b_pack_object(T);
b_encode_value(T) when is_tuple(T) -> b_pack_array(tuple_to_list(T));
b_encode_value(T) when is_pid(T) -> [$", list_to_binary(pid_to_list(T)), $"];
b_encode_value(T) when is_port(T) -> [$", list_to_binary(port_to_list(T)), $"];
b_encode_value(T) when is_function(T) -> [$", list_to_binary(erlang:fun_to_list(T)), $"];
b_encode_value(T) when is_reference(T) -> [$", list_to_binary(ref_to_list(T)), $"].
b_maybe_string(T) ->
S = unicode:characters_to_binary(T),
true = is_binary(S),
S.
b_pack_array([]) -> "[]";
b_pack_array([H | []]) -> [$[, b_encode_value(H), $]];
b_pack_array([H | T]) -> [$[, b_encode_value(H), $,, b_encode_array(T), $]].
b_encode_array([H | []]) -> b_encode_value(H);
b_encode_array([H | T]) -> [b_encode_value(H), $,, b_encode_array(T)].
b_pack_object(M) ->
case maps:to_list(M) of
[] ->
"{}";
[{K, V} | T] when is_list(K) ->
true = io_lib:printable_unicode_list(K),
Init = [$", K, $", $:, b_encode_value(V)],
[${, lists:foldl(fun b_pack_object/2, Init, T), $}];
[{K, V} | T] when is_binary(K) ->
true = io_lib:printable_unicode_list(unicode:characters_to_list(K)),
Init = [$", K, $", $:, b_encode_value(V)],
[${, lists:foldl(fun b_pack_object/2, Init, T), $}];
[{K, V} | T] when is_float(K) ->
Key = float_to_list(K),
Init = [$", Key, $", $:, b_encode_value(V)],
[${, lists:foldl(fun b_pack_object/2, Init, T), $}];
[{K, V} | T] when is_integer(K) ->
Key = integer_to_list(K),
Init = [$", Key, $", $:, b_encode_value(V)],
[${, lists:foldl(fun b_pack_object/2, Init, T), $}];
[{K, V} | T] when is_atom(K) ->
Init = [$", atom_to_binary(K, utf8), $", $:, b_encode_value(V)],
[${, lists:foldl(fun b_pack_object/2, Init, T), $}]
end.
b_pack_object({K, V}, L) when is_list(K) ->
true = io_lib:printable_unicode_list(K),
[$", K, $", $:, b_encode_value(V), $, | L];
b_pack_object({K, V}, L) when is_binary(K) ->
true = io_lib:printable_unicode_list(unicode:characters_to_list(K)),
[$", K, $", $:, b_encode_value(V), $, | L];
b_pack_object({K, V}, L) when is_float(K) ->
Key = float_to_list(K),
[$", Key, $", $:, b_encode_value(V), $, | L];
b_pack_object({K, V}, L) when is_integer(K) ->
Key = integer_to_list(K),
[$", Key, $", $:, b_encode_value(V), $, | L];
b_pack_object({K, V}, L) when is_atom(K) ->
[$", atom_to_list(K), $", $:, b_encode_value(V), $, | L].
%%% Decode Functions
-spec parse(Stream) -> Result
when Stream :: string(),
Result :: {ok, value()}
| {error, Extracted :: value(), Remaining :: string()}.
%% @private
%% The top-level dispatcher. This packages the top level value (or top-level error)
%% for return to the caller. A very similar function (value/1) is used for inner
%% values.
parse([${ | Rest]) ->
case object(Rest) of
{ok, Object, ""} -> {ok, Object};
{ok, Object, More} -> polish(Object, seek(More));
Error -> Error
end;
parse([$[ | Rest]) ->
case array(Rest) of
{ok, Array, ""} -> {ok, Array};
{ok, Array, More} -> polish(Array, seek(More));
Error -> Error
end;
parse([$" | Rest]) ->
case string(Rest) of
{ok, String, ""} -> {ok, String};
{ok, String, More} -> polish(String, seek(More));
Error -> Error
end;
parse([I | Rest]) when I == $-; $0 =< I, I =< $9 ->
case number_int(Rest, [I]) of
{ok, Number, ""} -> {ok, Number};
{ok, Number, More} -> polish(Number, seek(More));
Error -> Error
end;
parse("true" ++ More) ->
polish(true, seek(More));
parse("false" ++ More) ->
polish(false, seek(More));
parse("null" ++ More) ->
polish(undefined, seek(More));
parse(Other) ->
{error, [], Other}.
polish(Value, "") -> {ok, Value};
polish(Value, More) -> {error, Value, More}.
value([${ | Rest]) -> object(Rest);
value([$[ | Rest]) -> array(Rest);
value([$" | Rest]) -> string(Rest);
value([I | Rest]) when I == $-; $0 =< I, I =< $9 -> number_int(Rest, [I]);
value("true" ++ Rest) -> {ok, true, Rest};
value("false" ++ Rest) -> {ok, false, Rest};
value("null" ++ Rest) -> {ok, undefined, Rest};
value(_) -> error.
object([$} | Rest]) -> {ok, #{}, Rest};
object(String) -> object(seek(String), #{}).
object([$} | Rest], Map) ->
{ok, Map, Rest};
object([$" | Rest], Map) ->
case string(Rest) of
{ok, Key, Remainder} -> object_value(seek(Remainder), Key, Map);
{error, _, _} -> {error, Map, Rest}
end;
object(Rest, Map) ->
{error, Map, Rest}.
object_value([$: | Rest], Key, Map) ->
object_value_parse(seek(Rest), Key, Map);
object_value(Rest, Key, Map) ->
{error, maps:put(Key, undefined, Map), Rest}.
object_value_parse(String, Key, Map) ->
case value(String) of
{ok, Value, Rest} -> object_next(seek(Rest), maps:put(Key, Value, Map));
{error, Value, Rest} -> {error, maps:put(Key, Value, Map), Rest};
error -> {error, Map, String}
end.
object_next([$, | Rest], Map) -> object(seek(Rest), Map);
object_next([$} | Rest], Map) -> {ok, Map, seek(Rest)};
object_next(Rest, Map) -> {error, Map, Rest}.
array([$] | Rest]) -> {ok, [], Rest};
array(String) -> array(seek(String), []).
array([$] | Rest], List) ->
{ok, lists:reverse(List), seek(Rest)};
array(String, List) ->
case value(String) of
{ok, Value, Rest} -> array_next(seek(Rest), [Value | List]);
{error, Value, Rest} -> {error, lists:reverse([Value | List]), Rest};
error -> {error, lists:reverse(List), String}
end.
array_next([$, | Rest], List) -> array(seek(Rest), List);
array_next([$] | Rest], List) -> {ok, lists:reverse(List), seek(Rest)};
array_next(Rest, List) -> {error, lists:reverse(List), Rest}.
string(Stream) -> string(Stream, "").
string([$" | Rest], String) ->
{ok, lists:reverse(String), Rest};
string([$\\, $" | Rest], String) ->
string(Rest, [$" | String]);
string([$\\, $\\ | Rest], String) ->
string(Rest, [$\\ | String]);
string([$\\, $b | Rest], String) ->
string(Rest, [?BKSPC | String]);
string([$\\, $t | Rest], String) ->
string(Rest, [?H_TAB | String]);
string([$\\, $n | Rest], String) ->
string(Rest, [?NEW_L | String]);
string([$\\, $f | Rest], String) ->
string(Rest, [?FORMF | String]);
string([$\\, $r | Rest], String) ->
string(Rest, [?CAR_R | String]);
string([$\\, $u, A, B, C, D | Rest], String)
when (($0 =< A andalso A =< $9) or ($A =< A andalso A =< $F) or ($a =< A andalso A =< $f))
and (($0 =< B andalso B =< $9) or ($A =< B andalso B =< $F) or ($a =< B andalso B =< $f))
and (($0 =< C andalso C =< $9) or ($A =< C andalso C =< $F) or ($a =< C andalso C =< $f))
and (($0 =< D andalso D =< $9) or ($A =< D andalso D =< $F) or ($a =< D andalso D =< $f)) ->
Char = list_to_integer([A, B, C, D], 16),
string(Rest, [Char | String]);
string(Stream = [$\\, $u | _], String) ->
{error, String, Stream};
string([$\\, Char | Rest], String)
when Char == 16#20;
Char == 16#21;
16#23 =< Char, Char =< 16#5B;
16#5D =< Char, Char =< 16#10FFFF ->
string(Rest, [$\\, Char | String]);
string([Char | Rest], String)
when Char == 16#20;
Char == 16#21;
16#23 =< Char, Char =< 16#5B;
16#5D =< Char, Char =< 16#10FFFF ->
string(Rest, [Char | String]);
string(Rest, String) ->
{error, lists:reverse(String), Rest}.
number_int([$. | Rest], String) ->
number_float(Rest, [$. | String]);
number_int([$e, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e, $0, $. | String]);
number_int([$E, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e, $0, $. | String]);
number_int([$e, $+, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e, $0, $. | String]);
number_int([$E, $+, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e, $0, $. | String]);
number_int([$e, $-, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $-, $e, $0, $. | String]);
number_int([$E, $-, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $-, $e, $0, $. | String]);
number_int([Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_int(Rest, [Char | String]);
number_int(Rest, "-") ->
{error, "", [$- | Rest]};
number_int(Rest, String) ->
{ok, list_to_integer(lists:reverse(String)), seek(Rest)}.
number_float([Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float(Rest, [Char | String]);
number_float([$E, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e | String]);
number_float([$e, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e | String]);
number_float([$E, $+, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e | String]);
number_float([$e, $+, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $+, $e | String]);
number_float([$E, $-, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $-, $e | String]);
number_float([$e, $-, Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char, $-, $e | String]);
number_float(Rest, String) ->
Target = lists:reverse(String),
try
Number = list_to_float(Target),
{ok, Number, seek(Rest)}
catch
error:badarg -> {error, "", Target ++ Rest}
end.
number_float_exp([Char | Rest], String) when $0 =< Char, Char =< $9 ->
number_float_exp(Rest, [Char | String]);
number_float_exp(Rest, String) ->
Target = lists:reverse(String),
try
Number = list_to_float(Target),
{ok, Number, seek(Rest)}
catch
error:badarg -> {error, "", Target ++ Rest}
end.
seek([?H_TAB | Rest]) -> seek(Rest);
seek([?NEW_L | Rest]) -> seek(Rest);
seek([?CAR_R | Rest]) -> seek(Rest);
seek([?SPACE | Rest]) -> seek(Rest);
seek(String) -> String.
b_decode(Stream) ->
case unicode:characters_to_list(Stream) of
E when is_tuple(E) -> E;
[16#FEFF | String] -> binary_parse(seek(String));
String -> binary_parse(seek(String))
end.
-spec binary_parse(Stream) -> Result
when Stream :: string(),
Result :: {ok, bin_value()}
| {error, Extracted :: bin_value(), Remaining :: binary()}.
%% @private
%% The top-level dispatcher. This packages the top level value (or top-level error)
%% for return to the caller. A very similar function (b_value/1) is used for inner
%% values.
binary_parse([${ | Rest]) ->
case b_object(Rest) of
{ok, Object, ""} -> {ok, Object};
{ok, Object, More} -> b_polish(Object, seek(More));
Error -> Error
end;
binary_parse([$[ | Rest]) ->
case b_array(Rest) of
{ok, Array, ""} -> {ok, Array};
{ok, Array, More} -> b_polish(Array, seek(More));
Error -> Error
end;
binary_parse([$" | Rest]) ->
case string(Rest) of
{ok, String, ""} ->
case unicode:characters_to_binary(String) of
E when is_tuple(E) -> E;
Result -> {ok, Result}
end;
{ok, String, More} ->
case unicode:characters_to_binary(String) of
E when is_tuple(E) -> E;
Result -> b_polish(Result, seek(More))
end;
Error ->
Error
end;
binary_parse([I | Rest]) when I == $-; $0 =< I, I =< $9 ->
case number_int(Rest, [I]) of
{ok, Number, ""} -> {ok, Number};
{ok, Number, More} -> b_polish(Number, seek(More));
Error -> Error
end;
binary_parse("true" ++ More) ->
b_polish(true, seek(More));
binary_parse("false" ++ More) ->
b_polish(false, seek(More));
binary_parse("null" ++ More) ->
b_polish(undefined, seek(More));
binary_parse(Other) ->
{error, [], Other}.
b_polish(Value, "") -> {ok, Value};
b_polish(Value, More) -> {error, Value, More}.
b_value([${ | Rest]) -> b_object(Rest);
b_value([$[ | Rest]) -> b_array(Rest);
b_value([$" | Rest]) -> b_string(Rest);
b_value([I | Rest]) when I == $-; $0 =< I, I =< $9 -> number_int(Rest, [I]);
b_value("true" ++ Rest) -> {ok, true, Rest};
b_value("false" ++ Rest) -> {ok, false, Rest};
b_value("null" ++ Rest) -> {ok, undefined, Rest};
b_value(_) -> error.
b_string(Stream) ->
case string(Stream) of
{ok, String, More} ->
case unicode:characters_to_binary(String) of
E when is_tuple(E) -> E;
Result -> {ok, Result, More}
end;
Error -> Error
end.
b_object([$} | Rest]) -> {ok, #{}, Rest};
b_object(String) -> b_object(seek(String), #{}).
b_object([$} | Rest], Map) ->
{ok, Map, Rest};
b_object([$" | Rest], Map) ->
case string(Rest) of
{ok, Key, Remainder} ->
b_object_value(seek(Remainder), unicode:characters_to_binary(Key), Map);
{error, _, _} ->
{error, Map, Rest}
end;
b_object(Rest, Map) ->
{error, Map, Rest}.
b_object_value([$: | Rest], Key, Map) -> b_object_value_parse(seek(Rest), Key, Map);
b_object_value(Rest, Key, Map) -> {error, maps:put(Key, undefined, Map), Rest}.
b_object_value_parse(String, Key, Map) ->
case b_value(String) of
{ok, Value, Rest} -> b_object_next(seek(Rest), maps:put(Key, Value, Map));
{error, Value, Rest} -> {error, maps:put(Key, Value, Map), Rest};
error -> {error, Map, String}
end.
b_object_next([$, | Rest], Map) -> b_object(seek(Rest), Map);
b_object_next([$} | Rest], Map) -> {ok, Map, seek(Rest)};
b_object_next(Rest, Map) -> {error, Map, Rest}.
b_array([$] | Rest]) -> {ok, [], Rest};
b_array(String) -> b_array(seek(String), []).
b_array([$] | Rest], List) ->
{ok, lists:reverse(List), seek(Rest)};
b_array(String, List) ->
case b_value(String) of
{ok, Value, Rest} -> b_array_next(seek(Rest), [Value | List]);
{error, Value, Rest} -> {error, lists:reverse([Value | List]), Rest};
error -> {error, lists:reverse(List), String}
end.
b_array_next([$, | Rest], List) -> b_array(seek(Rest), List);
b_array_next([$] | Rest], List) -> {ok, lists:reverse(List), seek(Rest)};
b_array_next(Rest, List) -> {error, lists:reverse(List), Rest}.
+1 -1
View File
@@ -5,7 +5,7 @@
{prefix,"fd"}.
{desc,"Front End Web Dev in Erlang stuff"}.
{package_id,{"otpr","fewd",{0,2,0}}}.
{deps,[]}.
{deps,[{"otpr","zj",{1,1,2}}]}.
{key_name,none}.
{a_email,"peterharpending@qpq.swiss"}.
{c_email,"peterharpending@qpq.swiss"}.