diff options
author | Alon Zakai <azakai@mozilla.com> | 2011-01-16 23:22:57 -0800 |
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committer | Alon Zakai <azakai@mozilla.com> | 2011-01-16 23:22:57 -0800 |
commit | 13a520ed493d40e405045df1829863edfdb2308e (patch) | |
tree | 2932aea3d6164697bed5b1562e620217416da1d4 /src/library.js | |
parent | 9eb5dd2a45db42c792bb3948271d42016417404e (diff) |
sscanf
Diffstat (limited to 'src/library.js')
-rw-r--r-- | src/library.js | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/src/library.js b/src/library.js index 075b53d9..ff87374c 100644 --- a/src/library.js +++ b/src/library.js @@ -16,6 +16,51 @@ var Library = { // stdio.h + _scanString: function() { + // Supports %x, %4x, %d.%d + var str = Pointer_stringify(arguments[0]); + var stri = 0; + var fmt = Pointer_stringify(arguments[1]); + var fmti = 0; + var args = Array.prototype.slice.call(arguments, 2); + var argsi = 0; + var read = 0; + while (fmti < fmt.length) { + if (fmt[fmti] === '%') { + fmti++; + var max_ = parseInt(fmt[fmti]); + if (!isNaN(max_)) fmti++; + var type = fmt[fmti]; + fmti++; + var curr = 0; + while ((curr < max_ || isNaN(max_)) && stri+curr < str.length) { + if ((type === 'd' && parseInt(str[stri+curr]) >= 0) || + (type === 'x' && parseInt(str[stri+curr].replace(/[a-fA-F]/, 5)) >= 0)) { + curr++; + } else { + break; + } + } + if (curr === 0) { print("FAIL"); break; } + var text = str.substr(stri, curr); + stri += curr; + var value = type === 'd' ? parseInt(text) : eval('0x' + text); + {{{ makeSetValue('args[argsi]', '0', 'value', 'i32') }}} + argsi++; + read++; + } else { // not '%' + if (fmt[fmti] === str[stri]) { + fmti++; + stri++; + } else { + break; + } + } + } + return read; // XXX Possibly we should return EOF (-1) sometimes + }, + sscanf: '_scanString', + _formatString__deps: ['STDIO'], _formatString: function() { function isFloatArg(type) { @@ -252,8 +297,8 @@ var Library = { filename = Pointer_stringify(filename); mode = Pointer_stringify(mode); if (mode.indexOf('r') >= 0) { - //assert(filename in this._STDIO.filenames, 'No information for file: ' + filename); var stream = this._STDIO.filenames[filename]; + if (!stream) return 0; // assert(false, 'No information for file: ' + filename); var info = this._STDIO.streams[stream]; info.position = info.error = info.eof = 0; return stream; @@ -622,6 +667,9 @@ var Library = { return 0; }, + // Compiled from newlib; for the original source and licensing, see library_strtok_r.c + strtok_r: function(b,j,f){var a;a=null;var c,e;b=b;var i=b!=0;a:do if(i)a=0;else{b=IHEAP[f];if(b!=0){a=0;break a}c=0;a=3;break a}while(0);if(a==0){a:for(;;){e=IHEAP[b];b+=1;a=j;var g=e;i=a;a=2;b:for(;;){d=a==5?d:0;a=IHEAP[i+d];if(a!=0==0){a=9;break a}var d=d+1;if(g==a)break b;else a=5}a=2}if(a==9)if(g==0)c=IHEAP[f]=0;else{c=b+-1;a:for(;;){e=IHEAP[b];b+=1;a=j;g=e;d=a;a=10;b:for(;;){h=a==13?h:0;a=IHEAP[d+h];if(a==g!=0)break a;var h=h+1;if(a!=0)a=13;else break b}}if(e==0)b=0;else IHEAP[b+-1]=0; IHEAP[f]=b;c=c}else if(a==7){IHEAP[f]=b;IHEAP[b+-1]=0;c=b+-1}}return c}, + // ctype.h isdigit: function(chr) { |