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/*******************************************************************/
/* slibtool: a strong libtool implementation, written in C */
/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <string.h>
#include <limits.h>
#include <slibtool/slibtool.h>
#include "slibtool_driver_impl.h"
#include "slibtool_snprintf_impl.h"
#include "slibtool_errinfo_impl.h"
#include "slibtool_visibility_impl.h"
#include "slibtool_m4fake_impl.h"
slbt_hidden int slbt_m4fake_expand_cmdarg(
struct slbt_driver_ctx * dctx,
struct slbt_txtfile_ctx * sctx,
const char * cmdname,
char (*argbuf)[PATH_MAX])
{
const char ** pline;
size_t slen;
const char * mark;
const char * match;
const char * cap;
int fquote;
char varbuf[PATH_MAX];
char strbuf[PATH_MAX];
memset(*argbuf,0,sizeof(*argbuf));
slen = strlen(cmdname);
pline = sctx->txtlinev;
match = 0;
for (; !match && *pline; ) {
if (!strncmp(*pline,cmdname,slen)) {
if ((*pline)[slen] == '(') {
mark = &(*pline)[slen];
cap = ++mark;
for (fquote=0; !match && *cap; ) {
if (*cap == '[')
fquote++;
else if ((*cap == ']') && fquote)
fquote--;
else if ((*cap == ')') && !fquote)
match = cap;
if (!match)
cap++;
}
if (!match)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_FLOW_ERROR);
}
}
if (!match)
pline++;
}
if (!match)
return 0;
strncpy(strbuf,mark,cap-mark);
strbuf[cap-mark] = '\0';
mark = strbuf;
slen = strlen(mark);
if ((mark[0] == '[') && (mark[--slen] == ']')) {
strcpy(*argbuf,++mark);
(*argbuf)[--slen] = '\0';
return 0;
}
if (slbt_snprintf(
varbuf,sizeof(varbuf),
"AC_DEFUN([%s],",
strbuf) < 0)
return SLBT_BUFFER_ERROR(dctx);
slen = strlen(varbuf);
for (--pline; pline >= sctx->txtlinev; pline--) {
if (!strncmp(*pline,varbuf,slen)) {
mark = &(*pline)[slen];
cap = mark;
match = 0;
for (fquote=0; !match && *cap; ) {
if (*cap == '[')
fquote++;
else if ((*cap == ']') && fquote)
fquote--;
else if ((*cap == ')') && !fquote)
match = cap;
if (!match)
cap++;
}
if (!match)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_FLOW_ERROR);
strncpy(strbuf,mark,cap-mark);
strbuf[cap-mark] = '\0';
mark = strbuf;
slen = strlen(mark);
if ((mark[0] == '[') && (mark[--slen] == ']')) {
strcpy(*argbuf,++mark);
(*argbuf)[--slen] = '\0';
return 0;
}
if (slbt_snprintf(
varbuf,sizeof(varbuf),
"AC_DEFUN([%s],",
strbuf) < 0)
return SLBT_BUFFER_ERROR(dctx);
slen = strlen(varbuf);
}
}
strcpy(*argbuf,strbuf);
return 0;
}
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