git/alias.c
Junio C Hamano 417653777a Merge branch 'jk/maint-1.6.0-trace-argv' into maint
* jk/maint-1.6.0-trace-argv:
  fix GIT_TRACE segfault with shell-quoted aliases

Conflicts:
	alias.c
2009-05-25 19:03:20 -07:00

78 lines
1.4 KiB
C

#include "cache.h"
static const char *alias_key;
static char *alias_val;
static int alias_lookup_cb(const char *k, const char *v, void *cb)
{
if (!prefixcmp(k, "alias.") && !strcmp(k+6, alias_key)) {
if (!v)
return config_error_nonbool(k);
alias_val = xstrdup(v);
return 0;
}
return 0;
}
char *alias_lookup(const char *alias)
{
alias_key = alias;
alias_val = NULL;
git_config(alias_lookup_cb, NULL);
return alias_val;
}
int split_cmdline(char *cmdline, const char ***argv)
{
int src, dst, count = 0, size = 16;
char quoted = 0;
*argv = xmalloc(sizeof(char *) * size);
/* split alias_string */
(*argv)[count++] = cmdline;
for (src = dst = 0; cmdline[src];) {
char c = cmdline[src];
if (!quoted && isspace(c)) {
cmdline[dst++] = 0;
while (cmdline[++src]
&& isspace(cmdline[src]))
; /* skip */
ALLOC_GROW(*argv, count+1, size);
(*argv)[count++] = cmdline + dst;
} else if (!quoted && (c == '\'' || c == '"')) {
quoted = c;
src++;
} else if (c == quoted) {
quoted = 0;
src++;
} else {
if (c == '\\' && quoted != '\'') {
src++;
c = cmdline[src];
if (!c) {
free(*argv);
*argv = NULL;
return error("cmdline ends with \\");
}
}
cmdline[dst++] = c;
src++;
}
}
cmdline[dst] = 0;
if (quoted) {
free(*argv);
*argv = NULL;
return error("unclosed quote");
}
ALLOC_GROW(*argv, count+1, size);
(*argv)[count] = NULL;
return count;
}