107 lines
2 KiB
C
107 lines
2 KiB
C
/*
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* TTS - track your time.
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* Copyright (c) 2012-2014 Felicity Tarnell.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely. This software is provided 'as-is', without any express or implied
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* warranty.
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*/
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#include "str.h"
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size_t
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tokenise(str, res)
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const WCHAR *str;
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WCHAR ***res;
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{
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int ntoks = 0;
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const WCHAR *p, *q;
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*res = NULL;
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p = str;
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for (;;) {
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ptrdiff_t sz;
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int qskip = 0;
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/* Skip leading whitespace */
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while (ISSPACE(*p))
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p++;
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/* End of string - no more arguments */
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if (!*p)
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break;
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q = p;
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if (*q == '"') {
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/* Quoted string - scan for end of string */
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int isbsl = 0;
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p++;
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while (*++q) {
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/* Handle escaping with backslash; currently works but the \ isn't
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* removed from the string.
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*/
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if (*q == '\\') {
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isbsl = 1;
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continue;
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}
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if (!isbsl && (*q == '"'))
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break;
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isbsl = 0;
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}
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/* At this point, *q == '"'. If it's NUL instead, then the
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* string was not terminated with a closing '"' before the end
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* of the line. We could give an error here, but it seems
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* more useful to just accept it.
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*/
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if (*q == '"')
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qskip = 1;
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} else {
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/* Not quoted - just find the next whitespace */
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while (!ISSPACE(*q) && *q)
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q++;
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}
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/* Copy the argument (which is sz bytes long) into the result array */
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sz = (q - p);
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*res = realloc(*res, sizeof(WCHAR *) * (ntoks + 1));
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(*res)[ntoks] = malloc(sizeof(WCHAR) * (sz + 1));
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MEMCPY((*res)[ntoks], p, sz);
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(*res)[ntoks][sz] = 0;
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ntoks++;
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if (qskip)
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q += qskip;
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while (ISSPACE(*q))
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q++;
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/*
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* q is the start of the next token (with leading whitespace); reset
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* p to process the next argument.
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*/
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if (!*q)
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break;
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p = q;
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}
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*res = realloc(*res, sizeof(WCHAR *) * (ntoks + 1));
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(*res)[ntoks] = NULL;
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return ntoks;
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}
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void
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tokfree(vec)
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WCHAR ***vec;
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{
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WCHAR **p;
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for (p = (*vec); *p; p++)
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free(*p);
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free(*vec);
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}
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