[thirdparty/git.git] / alias.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;
}

#define SPLIT_CMDLINE_BAD_ENDING 1
#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
static const char *split_cmdline_errors[] = {
	"cmdline ends with \\",
	"unclosed quote"
};

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 -SPLIT_CMDLINE_BAD_ENDING;
				}
			}
			cmdline[dst++] = c;
			src++;
		}
	}

	cmdline[dst] = 0;

	if (quoted) {
		free(*argv);
		*argv = NULL;
		return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
	}

	ALLOC_GROW(*argv, count+1, size);
	(*argv)[count] = NULL;

	return count;
}

const char *split_cmdline_strerror(int split_cmdline_errno) {
	return split_cmdline_errors[-split_cmdline_errno-1];
}
Commit	Line	Data
94351118 JK	1	#include "cache.h"
	2
	3	static const char *alias_key;
	4	static char *alias_val;
ef90d6d4 JS	5
ef90d6d4 JS	6	static int alias_lookup_cb(const char k, const char v, void *cb)
94351118 JK	7	{
	8	if (!prefixcmp(k, "alias.") && !strcmp(k+6, alias_key)) {
	9	if (!v)
	10	return config_error_nonbool(k);
	11	alias_val = xstrdup(v);
	12	return 0;
	13	}
	14	return 0;
	15	}
	16
	17	char alias_lookup(const char alias)
	18	{
	19	alias_key = alias;
	20	alias_val = NULL;
ef90d6d4	21	git_config(alias_lookup_cb, NULL);
94351118 JK	22	return alias_val;
94351118 JK	23	}
0989fe96	24
ad9ac6db GB	25	#define SPLIT_CMDLINE_BAD_ENDING 1
	26	#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
	27	static const char *split_cmdline_errors[] = {
	28	"cmdline ends with \\",
	29	"unclosed quote"
	30	};
	31
0989fe96 MV	32	int split_cmdline(char cmdline, const char **argv)
	33	{
	34	int src, dst, count = 0, size = 16;
	35	char quoted = 0;
	36
4b25d091	37	argv = xmalloc(sizeof(char ) * size);
0989fe96 MV	38
	39	/* split alias_string */
	40	(*argv)[count++] = cmdline;
	41	for (src = dst = 0; cmdline[src];) {
	42	char c = cmdline[src];
	43	if (!quoted && isspace(c)) {
	44	cmdline[dst++] = 0;
	45	while (cmdline[++src]
	46	&& isspace(cmdline[src]))
	47	; /* skip */
27d5438d	48	ALLOC_GROW(*argv, count+1, size);
0989fe96 MV	49	(*argv)[count++] = cmdline + dst;
	50	} else if (!quoted && (c == '\'' \|\| c == '"')) {
	51	quoted = c;
	52	src++;
	53	} else if (c == quoted) {
	54	quoted = 0;
	55	src++;
	56	} else {
	57	if (c == '\\' && quoted != '\'') {
	58	src++;
	59	c = cmdline[src];
	60	if (!c) {
	61	free(*argv);
	62	*argv = NULL;
ad9ac6db	63	return -SPLIT_CMDLINE_BAD_ENDING;
0989fe96 MV	64	}
	65	}
	66	cmdline[dst++] = c;
	67	src++;
	68	}
	69	}
	70
	71	cmdline[dst] = 0;
	72
	73	if (quoted) {
	74	free(*argv);
	75	*argv = NULL;
ad9ac6db	76	return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
0989fe96 MV	77	}
0989fe96 MV	78
27d5438d JK	79	ALLOC_GROW(*argv, count+1, size);
	80	(*argv)[count] = NULL;
	81
0989fe96 MV	82	return count;
	83	}
	84
ad9ac6db GB	85	const char *split_cmdline_strerror(int split_cmdline_errno) {
	86	return split_cmdline_errors[-split_cmdline_errno-1];
	87	}