[thirdparty/git.git] / alias.c

#include "cache.h"
#include "alias.h"
#include "config.h"
#include "string-list.h"

struct config_alias_data {
	const char *alias;
	char *v;
	struct string_list *list;
};

static int config_alias_cb(const char *key, const char *value, void *d)
{
	struct config_alias_data *data = d;
	const char *p;

	if (!skip_prefix(key, "alias.", &p))
		return 0;

	if (data->alias) {
		if (!strcasecmp(p, data->alias))
			return git_config_string((const char **)&data->v,
						 key, value);
	} else if (data->list) {
		string_list_append(data->list, p);
	}

	return 0;
}

char *alias_lookup(const char *alias)
{
	struct config_alias_data data = { alias, NULL };

	read_early_config(config_alias_cb, &data);

	return data.v;
}

void list_aliases(struct string_list *list)
{
	struct config_alias_data data = { NULL, NULL, list };

	read_early_config(config_alias_cb, &data);
}

#define SPLIT_CMDLINE_BAD_ENDING 1
#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
#define SPLIT_CMDLINE_ARGC_OVERFLOW 3
static const char *split_cmdline_errors[] = {
	N_("cmdline ends with \\"),
	N_("unclosed quote"),
	N_("too many arguments"),
};

int split_cmdline(char *cmdline, const char ***argv)
{
	size_t src, dst, count = 0, size = 16;
	char quoted = 0;

	ALLOC_ARRAY(*argv, 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_AND_NULL(*argv);
					return -SPLIT_CMDLINE_BAD_ENDING;
				}
			}
			cmdline[dst++] = c;
			src++;
		}
	}

	cmdline[dst] = 0;

	if (quoted) {
		FREE_AND_NULL(*argv);
		return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
	}

	if (count >= INT_MAX) {
		FREE_AND_NULL(*argv);
		return -SPLIT_CMDLINE_ARGC_OVERFLOW;
	}

	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	1	#include "cache.h"
65b5f948	2	#include "alias.h"
b2141fc1	3	#include "config.h"
3301d36b	4	#include "string-list.h"
94351118	5
a9bcf658 JS	6	struct config_alias_data {
	7	const char *alias;
	8	char *v;
3301d36b	9	struct string_list *list;
a9bcf658 JS	10	};
	11
	12	static int config_alias_cb(const char key, const char value, void *d)
	13	{
	14	struct config_alias_data *data = d;
	15	const char *p;
	16
3301d36b NTND	17	if (!skip_prefix(key, "alias.", &p))
	18	return 0;
	19
	20	if (data->alias) {
	21	if (!strcasecmp(p, data->alias))
	22	return git_config_string((const char **)&data->v,
	23	key, value);
	24	} else if (data->list) {
	25	string_list_append(data->list, p);
	26	}
a9bcf658 JS	27
	28	return 0;
	29	}
	30
94351118 JK	31	char alias_lookup(const char alias)
94351118 JK	32	{
a9bcf658 JS	33	struct config_alias_data data = { alias, NULL };
	34
	35	read_early_config(config_alias_cb, &data);
	36
	37	return data.v;
94351118	38	}
0989fe96	39
3301d36b NTND	40	void list_aliases(struct string_list *list)
	41	{
	42	struct config_alias_data data = { NULL, NULL, list };
	43
	44	read_early_config(config_alias_cb, &data);
	45	}
	46
ad9ac6db GB	47	#define SPLIT_CMDLINE_BAD_ENDING 1
ad9ac6db GB	48	#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
0ca6ead8	49	#define SPLIT_CMDLINE_ARGC_OVERFLOW 3
ad9ac6db	50	static const char *split_cmdline_errors[] = {
a7412ae1	51	N_("cmdline ends with \\"),
0ca6ead8 KB	52	N_("unclosed quote"),
0ca6ead8 KB	53	N_("too many arguments"),
ad9ac6db GB	54	};
ad9ac6db GB	55
0989fe96 MV	56	int split_cmdline(char cmdline, const char **argv)
0989fe96 MV	57	{
0ca6ead8	58	size_t src, dst, count = 0, size = 16;
0989fe96 MV	59	char quoted = 0;
0989fe96 MV	60
b32fa95f	61	ALLOC_ARRAY(*argv, size);
0989fe96 MV	62
	63	/* split alias_string */
	64	(*argv)[count++] = cmdline;
	65	for (src = dst = 0; cmdline[src];) {
	66	char c = cmdline[src];
	67	if (!quoted && isspace(c)) {
	68	cmdline[dst++] = 0;
	69	while (cmdline[++src]
	70	&& isspace(cmdline[src]))
	71	; /* skip */
cc108379	72	ALLOC_GROW(*argv, count + 1, size);
0989fe96 MV	73	(*argv)[count++] = cmdline + dst;
	74	} else if (!quoted && (c == '\'' \|\| c == '"')) {
	75	quoted = c;
	76	src++;
	77	} else if (c == quoted) {
	78	quoted = 0;
	79	src++;
	80	} else {
	81	if (c == '\\' && quoted != '\'') {
	82	src++;
	83	c = cmdline[src];
	84	if (!c) {
6a83d902	85	FREE_AND_NULL(*argv);
ad9ac6db	86	return -SPLIT_CMDLINE_BAD_ENDING;
0989fe96 MV	87	}
	88	}
	89	cmdline[dst++] = c;
	90	src++;
	91	}
	92	}
	93
	94	cmdline[dst] = 0;
	95
	96	if (quoted) {
6a83d902	97	FREE_AND_NULL(*argv);
ad9ac6db	98	return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
0989fe96 MV	99	}
0989fe96 MV	100
0ca6ead8 KB	101	if (count >= INT_MAX) {
	102	FREE_AND_NULL(*argv);
	103	return -SPLIT_CMDLINE_ARGC_OVERFLOW;
	104	}
	105
cc108379	106	ALLOC_GROW(*argv, count + 1, size);
27d5438d JK	107	(*argv)[count] = NULL;
27d5438d JK	108
0989fe96 MV	109	return count;
	110	}
	111
cc108379 FC	112	const char *split_cmdline_strerror(int split_cmdline_errno)
	113	{
	114	return split_cmdline_errors[-split_cmdline_errno - 1];
ad9ac6db	115	}