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nasm.c: getkw -- use string helpers

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This allow us to shrink code a bit and
make it easy to read.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov 2009-09-18 19:23:53 +04:00
parent c7e8f1bf6f
commit bd416c6860
1 changed files with 27 additions and 36 deletions
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63
nasm.c
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@ -1772,47 +1772,38 @@ static enum directives getkw(char **directive, char **value)
{
char *p, *q, *buf;
buf = *directive;
/* allow leading spaces or tabs */
while (*buf == ' ' || *buf == '\t')
buf++;
buf = nasm_skip_spaces(*directive);
/* it should be enclosed in [ ] */
if (*buf != '[')
return 0;
return D_NONE;
q = strchr(buf, ']');
if (!q)
return D_NONE;
p = buf;
while (*p && *p != ']')
p++;
if (!*p)
return 0;
q = p++;
while (*p && *p != ';') {
if (!nasm_isspace(*p))
return 0;
p++;
/* stip off the comments */
p = strchr(buf, ';');
if (p) {
if (p < q) /* ouch! somwhere inside */
return D_NONE;
*p = '\0';
}
q[1] = '\0';
*directive = p = buf + 1;
while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
buf++;
if (*buf == ']') {
*buf = '\0';
*value = buf;
} else {
*buf++ = '\0';
while (nasm_isspace(*buf))
buf++; /* beppu - skip leading whitespace */
*value = buf;
while (*buf != ']')
buf++;
*buf++ = '\0';
}
/* no brace, no trailing spaces */
*q = '\0';
nasm_zap_spaces_rev(--q);
/* directive */
p = nasm_skip_spaces(++buf);
q = nasm_skip_word(p);
if (!q)
return D_NONE; /* sigh... no value there */
*q = '\0';
*directive = p;
/* and value finally */
p = nasm_skip_spaces(++q);
*value = p;
return find_directive(*directive);
}