string_list: Fix argument order for string_list_insert
[git/git.git] / builtin / mv.c
CommitLineData
11be42a4
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1/*
2 * "git mv" builtin command
3 *
4 * Copyright (C) 2006 Johannes Schindelin
5 */
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6#include "cache.h"
7#include "builtin.h"
8#include "dir.h"
9#include "cache-tree.h"
c455c87c 10#include "string-list.h"
c7a20c11 11#include "parse-options.h"
11be42a4 12
c7a20c11 13static const char * const builtin_mv_usage[] = {
1b1dd23f 14 "git mv [options] <source>... <destination>",
c7a20c11
PH
15 NULL
16};
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17
18static const char **copy_pathspec(const char *prefix, const char **pathspec,
19 int count, int base_name)
20{
d78b0f3d 21 int i;
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22 const char **result = xmalloc((count + 1) * sizeof(const char *));
23 memcpy(result, pathspec, count * sizeof(const char *));
24 result[count] = NULL;
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25 for (i = 0; i < count; i++) {
26 int length = strlen(result[i]);
af82559b
JH
27 int to_copy = length;
28 while (to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
29 to_copy--;
30 if (to_copy != length || base_name) {
31 char *it = xmemdupz(result[i], to_copy);
32 result[i] = base_name ? strdup(basename(it)) : it;
33 }
11be42a4 34 }
971dfa19 35 return get_pathspec(prefix, result);
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36}
37
ac64a722
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38static const char *add_slash(const char *path)
39{
40 int len = strlen(path);
41 if (path[len - 1] != '/') {
42 char *with_slash = xmalloc(len + 2);
43 memcpy(with_slash, path, len);
329a3047
JH
44 with_slash[len++] = '/';
45 with_slash[len] = 0;
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46 return with_slash;
47 }
48 return path;
49}
50
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51static struct lock_file lock_file;
52
7061cf0f 53int cmd_mv(int argc, const char **argv, const char *prefix)
11be42a4 54{
c7a20c11 55 int i, newfd;
11be42a4 56 int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
c7a20c11
PH
57 struct option builtin_mv_options[] = {
58 OPT__DRY_RUN(&show_only),
f7aec129 59 OPT_BOOLEAN('f', "force", &force, "force move/rename even if target exists"),
c7a20c11
PH
60 OPT_BOOLEAN('k', NULL, &ignore_errors, "skip move/rename errors"),
61 OPT_END(),
62 };
11be42a4 63 const char **source, **destination, **dest_path;
ac64a722 64 enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
11be42a4 65 struct stat st;
c455c87c 66 struct string_list src_for_dst = {NULL, 0, 0, 0};
11be42a4 67
ef90d6d4 68 git_config(git_default_config, NULL);
11be42a4 69
37782920
SB
70 argc = parse_options(argc, argv, prefix, builtin_mv_options,
71 builtin_mv_usage, 0);
c7a20c11
PH
72 if (--argc < 1)
73 usage_with_options(builtin_mv_usage, builtin_mv_options);
11be42a4 74
99caeed0
JN
75 newfd = hold_locked_index(&lock_file, 1);
76 if (read_cache() < 0)
77 die("index file corrupt");
78
c7a20c11
PH
79 source = copy_pathspec(prefix, argv, argc, 0);
80 modes = xcalloc(argc, sizeof(enum update_mode));
81 dest_path = copy_pathspec(prefix, argv + argc, 1, 0);
11be42a4 82
c5203bdf
JS
83 if (dest_path[0][0] == '\0')
84 /* special case: "." was normalized to "" */
c7a20c11 85 destination = copy_pathspec(dest_path[0], argv, argc, 1);
c5203bdf 86 else if (!lstat(dest_path[0], &st) &&
ac64a722
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87 S_ISDIR(st.st_mode)) {
88 dest_path[0] = add_slash(dest_path[0]);
c7a20c11 89 destination = copy_pathspec(dest_path[0], argv, argc, 1);
ac64a722 90 } else {
c7a20c11
PH
91 if (argc != 1)
92 usage_with_options(builtin_mv_usage, builtin_mv_options);
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93 destination = dest_path;
94 }
95
96 /* Checking */
c7a20c11 97 for (i = 0; i < argc; i++) {
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98 const char *src = source[i], *dst = destination[i];
99 int length, src_is_dir;
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100 const char *bad = NULL;
101
102 if (show_only)
60a6bf5f 103 printf("Checking rename of '%s' to '%s'\n", src, dst);
11be42a4 104
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105 length = strlen(src);
106 if (lstat(src, &st) < 0)
11be42a4 107 bad = "bad source";
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108 else if (!strncmp(src, dst, length) &&
109 (dst[length] == 0 || dst[length] == '/')) {
d78b0f3d 110 bad = "can not move directory into itself";
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111 } else if ((src_is_dir = S_ISDIR(st.st_mode))
112 && lstat(dst, &st) == 0)
113 bad = "cannot move directory over file";
114 else if (src_is_dir) {
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115 const char *src_w_slash = add_slash(src);
116 int len_w_slash = length + 1;
60a6bf5f 117 int first, last;
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118
119 modes[i] = WORKING_DIRECTORY;
120
aca085e5 121 first = cache_name_pos(src_w_slash, len_w_slash);
ac64a722 122 if (first >= 0)
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123 die ("Huh? %.*s is in index?",
124 len_w_slash, src_w_slash);
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125
126 first = -1 - first;
127 for (last = first; last < active_nr; last++) {
128 const char *path = active_cache[last]->name;
aca085e5 129 if (strncmp(path, src_w_slash, len_w_slash))
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130 break;
131 }
aca085e5 132 free((char *)src_w_slash);
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133
134 if (last - first < 1)
135 bad = "source directory is empty";
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136 else {
137 int j, dst_len;
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138
139 if (last - first > 0) {
83572c1a 140 source = xrealloc(source,
c7a20c11 141 (argc + last - first)
ac64a722 142 * sizeof(char *));
83572c1a 143 destination = xrealloc(destination,
c7a20c11 144 (argc + last - first)
ac64a722 145 * sizeof(char *));
83572c1a 146 modes = xrealloc(modes,
c7a20c11 147 (argc + last - first)
ac64a722
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148 * sizeof(enum update_mode));
149 }
150
60a6bf5f 151 dst = add_slash(dst);
d089ebaa 152 dst_len = strlen(dst);
ac64a722
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153
154 for (j = 0; j < last - first; j++) {
155 const char *path =
156 active_cache[first + j]->name;
c7a20c11
PH
157 source[argc + j] = path;
158 destination[argc + j] =
60a6bf5f 159 prefix_path(dst, dst_len,
d089ebaa 160 path + length + 1);
c7a20c11 161 modes[argc + j] = INDEX;
ac64a722 162 }
c7a20c11 163 argc += last - first;
ac64a722 164 }
5aed3c6a
MM
165 } else if (cache_name_pos(src, length) < 0)
166 bad = "not under version control";
167 else if (lstat(dst, &st) == 0) {
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168 bad = "destination exists";
169 if (force) {
170 /*
171 * only files can overwrite each other:
172 * check both source and destination
173 */
81dc2307 174 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
bd757c18 175 warning("%s; will overwrite!", bad);
11be42a4 176 bad = NULL;
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177 } else
178 bad = "Cannot overwrite";
179 }
5aed3c6a 180 } else if (string_list_has_string(&src_for_dst, dst))
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181 bad = "multiple sources for the same target";
182 else
78a395d3 183 string_list_insert(&src_for_dst, dst);
11be42a4 184
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185 if (bad) {
186 if (ignore_errors) {
c7a20c11 187 if (--argc > 0) {
11be42a4 188 memmove(source + i, source + i + 1,
c7a20c11 189 (argc - i) * sizeof(char *));
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190 memmove(destination + i,
191 destination + i + 1,
c7a20c11 192 (argc - i) * sizeof(char *));
be17262d 193 i--;
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194 }
195 } else
ac64a722 196 die ("%s, source=%s, destination=%s",
60a6bf5f 197 bad, src, dst);
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198 }
199 }
200
c7a20c11 201 for (i = 0; i < argc; i++) {
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202 const char *src = source[i], *dst = destination[i];
203 enum update_mode mode = modes[i];
81dc2307 204 int pos;
11be42a4 205 if (show_only || verbose)
60a6bf5f
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206 printf("Renaming %s to %s\n", src, dst);
207 if (!show_only && mode != INDEX &&
208 rename(src, dst) < 0 && !ignore_errors)
d824cbba 209 die_errno ("renaming '%s' failed", src);
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210
211 if (mode == WORKING_DIRECTORY)
ac64a722
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212 continue;
213
81dc2307
PB
214 pos = cache_name_pos(src, strlen(src));
215 assert(pos >= 0);
216 if (!show_only)
217 rename_cache_entry_at(pos, dst);
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218 }
219
81dc2307
PB
220 if (active_cache_changed) {
221 if (write_cache(newfd, active_cache, active_nr) ||
222 commit_locked_index(&lock_file))
223 die("Unable to write new index file");
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224 }
225
226 return 0;
227}