Merge branch 'rs/nth-switch-code-simplification'
[git/git.git] / alias.c
CommitLineData
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
6struct config_alias_data {
7 const char *alias;
8 char *v;
3301d36b 9 struct string_list *list;
a9bcf658
JS
10};
11
12static 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
31char *alias_lookup(const char *alias)
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
40void 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
48#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
49static const char *split_cmdline_errors[] = {
a7412ae1
NTND
50 N_("cmdline ends with \\"),
51 N_("unclosed quote")
ad9ac6db
GB
52};
53
0989fe96
MV
54int split_cmdline(char *cmdline, const char ***argv)
55{
56 int src, dst, count = 0, size = 16;
57 char quoted = 0;
58
b32fa95f 59 ALLOC_ARRAY(*argv, size);
0989fe96
MV
60
61 /* split alias_string */
62 (*argv)[count++] = cmdline;
63 for (src = dst = 0; cmdline[src];) {
64 char c = cmdline[src];
65 if (!quoted && isspace(c)) {
66 cmdline[dst++] = 0;
67 while (cmdline[++src]
68 && isspace(cmdline[src]))
69 ; /* skip */
cc108379 70 ALLOC_GROW(*argv, count + 1, size);
0989fe96
MV
71 (*argv)[count++] = cmdline + dst;
72 } else if (!quoted && (c == '\'' || c == '"')) {
73 quoted = c;
74 src++;
75 } else if (c == quoted) {
76 quoted = 0;
77 src++;
78 } else {
79 if (c == '\\' && quoted != '\'') {
80 src++;
81 c = cmdline[src];
82 if (!c) {
6a83d902 83 FREE_AND_NULL(*argv);
ad9ac6db 84 return -SPLIT_CMDLINE_BAD_ENDING;
0989fe96
MV
85 }
86 }
87 cmdline[dst++] = c;
88 src++;
89 }
90 }
91
92 cmdline[dst] = 0;
93
94 if (quoted) {
6a83d902 95 FREE_AND_NULL(*argv);
ad9ac6db 96 return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
0989fe96
MV
97 }
98
cc108379 99 ALLOC_GROW(*argv, count + 1, size);
27d5438d
JK
100 (*argv)[count] = NULL;
101
0989fe96
MV
102 return count;
103}
104
cc108379
FC
105const char *split_cmdline_strerror(int split_cmdline_errno)
106{
107 return split_cmdline_errors[-split_cmdline_errno - 1];
ad9ac6db 108}