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// Js_of_ocaml runtime support
// http://www.ocsigen.org/js_of_ocaml/
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, with linking exception;
// either version 2.1 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
///////////// Format
//Provides: caml_parse_format
//Requires: caml_jsbytes_of_string, caml_invalid_argument
function caml_parse_format(fmt) {
fmt = caml_jsbytes_of_string(fmt);
var len = fmt.length;
if (len > 31) caml_invalid_argument("format_int: format too long");
var f = {
justify: "+",
signstyle: "-",
filler: " ",
alternate: false,
base: 0,
signedconv: false,
width: 0,
uppercase: false,
sign: 1,
prec: -1,
conv: "f",
};
for (var i = 0; i < len; i++) {
var c = fmt.charAt(i);
switch (c) {
case "-":
f.justify = "-";
break;
case "+":
case " ":
f.signstyle = c;
break;
case "0":
f.filler = "0";
break;
case "#":
f.alternate = true;
break;
case "1":
case "2":
case "3":
case "4":
case "5":
case "6":
case "7":
case "8":
case "9":
f.width = 0;
while (((c = fmt.charCodeAt(i) - 48), c >= 0 && c <= 9)) {
f.width = f.width * 10 + c;
i++;
}
i--;
break;
case ".":
f.prec = 0;
i++;
while (((c = fmt.charCodeAt(i) - 48), c >= 0 && c <= 9)) {
f.prec = f.prec * 10 + c;
i++;
}
i--;
break;
case "d":
case "i":
f.signedconv = true;
f.base = 10;
break;
case "u":
f.base = 10;
break;
case "x":
f.base = 16;
break;
case "X":
f.base = 16;
f.uppercase = true;
break;
case "o":
f.base = 8;
break;
case "e":
case "f":
case "g":
f.signedconv = true;
f.conv = c;
break;
case "E":
case "F":
case "G":
f.signedconv = true;
f.uppercase = true;
f.conv = c.toLowerCase();
break;
}
}
return f;
}
//Provides: caml_finish_formatting
//Requires: caml_string_of_jsbytes
function caml_finish_formatting(f, rawbuffer) {
if (f.uppercase) rawbuffer = rawbuffer.toUpperCase();
var len = rawbuffer.length;
/* Adjust len to reflect additional chars (sign, etc) */
if (f.signedconv && (f.sign < 0 || f.signstyle !== "-")) len++;
if (f.alternate) {
if (f.base === 8) len += 1;
if (f.base === 16) len += 2;
}
/* Do the formatting */
var buffer = "";
if (f.justify === "+" && f.filler === " ")
for (var i = len; i < f.width; i++) buffer += " ";
if (f.signedconv) {
if (f.sign < 0) buffer += "-";
else if (f.signstyle !== "-") buffer += f.signstyle;
}
if (f.alternate && f.base === 8) buffer += "0";
if (f.alternate && f.base === 16) buffer += f.uppercase ? "0X" : "0x";
if (f.justify === "+" && f.filler === "0")
for (var i = len; i < f.width; i++) buffer += "0";
buffer += rawbuffer;
if (f.justify === "-") for (var i = len; i < f.width; i++) buffer += " ";
return caml_string_of_jsbytes(buffer);
}
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