diff options
| -rw-r--r-- | Documentation/git-config-set.txt | 62 | ||||
| -rw-r--r-- | cache.h | 3 | ||||
| -rw-r--r-- | config-set.c | 92 | ||||
| -rw-r--r-- | config.c | 116 | ||||
| -rw-r--r-- | t/t1300-config-set.sh (renamed from t1300-config-set.sh) | 46 |
5 files changed, 258 insertions, 61 deletions
diff --git a/Documentation/git-config-set.txt b/Documentation/git-config-set.txt index 8e897be83..c707fbcf9 100644 --- a/Documentation/git-config-set.txt +++ b/Documentation/git-config-set.txt @@ -8,12 +8,18 @@ git-config-set - Set options in .git/config. SYNOPSIS -------- -'git-config-set' ( name [value [value_regex]] | --unset name [value_regex] ) +'git-config-set' name [value [value_regex]] +'git-config-set' --replace-all name [value [value_regex]] +'git-config-set' --get name [value_regex] +'git-config-set' --get-all name [value_regex] +'git-config-set' --unset name [value_regex] +'git-config-set' --unset-all name [value_regex] DESCRIPTION ----------- -You can set/replace/unset options with this command. The name is actually -the section and the key separated by a dot, and the value will be escaped. +You can query/set/replace/unset options with this command. The name is +actually the section and the key separated by a dot, and the value will be +escaped. If you want to set/unset an option which can occor on multiple lines, you should provide a POSIX regex for the value. @@ -31,8 +37,23 @@ This command will fail if OPTIONS ------- +--replace-all:: + Default behaviour is to replace at most one line. This replaces + all lines matching the key (and optionally the value_regex) + +--get:: + Get the value for a given key (optionally filtered by a regex + matching the value). + +--get-all:: + Like get, but does not fail if the number of values for the key + is not exactly one. + --unset:: - Remove the given option from .git/config + Remove the line matching the key from .git/config. + +--unset-all:: + Remove all matching lines from .git/config. EXAMPLE @@ -84,14 +105,39 @@ To delete the entry for renames, do % git config-set --unset diff.renames ------------ -or just +If you want to delete an entry for a multivar (like proxy.command above), +you have to provide a regex matching the value of exactly one line. + +To query the value for a given key, do ------------ -% git config-set diff.renames +% git config-set --get core.filemode ------------ -If you want to delete an entry for a multivar (like proxy.command above), -you have to provide a regex matching the value of exactly one line. +or + +------------ +% git config-set core.filemode +------------ + +or, to query a multivar: + +------------ +% git config-set --get proxy.command "for kernel.org$" +------------ + +If you want to know all the values for a multivar, do: + +------------ +% git config-set --get-all proxy.command +------------ + +If you like to live dangerous, you can replace *all* proxy.commands by a +new one with + +------------ +% git config-set --replace-all proxy.command ssh +------------ Author @@ -192,7 +192,6 @@ extern int diff_rename_limit_default; /* Return a statically allocated filename matching the sha1 signature */ extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); -extern char *enter_repo(char *path, int strict); extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); extern char *sha1_file_name(const unsigned char *sha1); extern char *sha1_pack_name(const unsigned char *sha1); @@ -388,7 +387,7 @@ extern int git_config(config_fn_t fn); extern int git_config_int(const char *, const char *); extern int git_config_bool(const char *, const char *); extern int git_config_set(const char *, const char *); -extern int git_config_set_multivar(const char *, const char *, const char *); +extern int git_config_set_multivar(const char *, const char *, const char *, int); #define MAX_GITNAME (1000) extern char git_default_email[MAX_GITNAME]; diff --git a/config-set.c b/config-set.c index 1b1547b53..90a28b381 100644 --- a/config-set.c +++ b/config-set.c @@ -1,24 +1,106 @@ #include "cache.h" +#include <regex.h> static const char git_config_set_usage[] = -"git-config-set name [value [value_regex]] | --unset name [value_regex]"; +"git-config-set [--get | --get-all | --replace-all | --unset | --unset-all] name [value [value_regex]]"; + +static char* key = NULL; +static char* value = NULL; +static regex_t* regex = NULL; +static int do_all = 0; +static int seen = 0; + +static int show_config(const char* key_, const char* value_) +{ + if (!strcmp(key_, key) && + (regex == NULL || + !regexec(regex, value_, 0, NULL, 0))) { + if (do_all) { + printf("%s\n", value_); + return 0; + } + if (seen > 0) { + fprintf(stderr, "More than one value: %s\n", value); + free(value); + } + value = strdup(value_); + seen++; + } + return 0; +} + +static int get_value(const char* key_, const char* regex_) +{ + int i; + + key = malloc(strlen(key_)+1); + for (i = 0; key_[i]; i++) + key[i] = tolower(key_[i]); + + if (regex_) { + regex = (regex_t*)malloc(sizeof(regex_t)); + if (regcomp(regex, regex_, REG_EXTENDED)) { + fprintf(stderr, "Invalid pattern: %s\n", regex_); + return -1; + } + } + + i = git_config(show_config); + if (value) { + printf("%s\n", value); + free(value); + } + free(key); + if (regex) { + regfree(regex); + free(regex); + } + + if (do_all) + return 0; + + return seen == 1 ? 0 : 1; +} int main(int argc, const char **argv) { setup_git_directory(); switch (argc) { case 2: - return git_config_set(argv[1], NULL); + return get_value(argv[1], NULL); case 3: if (!strcmp(argv[1], "--unset")) return git_config_set(argv[2], NULL); - else + else if (!strcmp(argv[1], "--unset-all")) + return git_config_set_multivar(argv[2], NULL, NULL, 1); + else if (!strcmp(argv[1], "--get")) + return get_value(argv[2], NULL); + else if (!strcmp(argv[1], "--get-all")) { + do_all = 1; + return get_value(argv[2], NULL); + } else + return git_config_set(argv[1], argv[2]); case 4: if (!strcmp(argv[1], "--unset")) - return git_config_set_multivar(argv[2], NULL, argv[3]); + return git_config_set_multivar(argv[2], NULL, argv[3], 0); + else if (!strcmp(argv[1], "--unset-all")) + return git_config_set_multivar(argv[2], NULL, argv[3], 1); + else if (!strcmp(argv[1], "--get")) + return get_value(argv[2], argv[3]); + else if (!strcmp(argv[1], "--get-all")) { + do_all = 1; + return get_value(argv[2], argv[3]); + } else if (!strcmp(argv[1], "--replace-all")) + + return git_config_set_multivar(argv[2], argv[3], NULL, 1); else - return git_config_set_multivar(argv[1], argv[2], argv[3]); + + return git_config_set_multivar(argv[1], argv[2], argv[3], 0); + case 5: + if (!strcmp(argv[1], "--replace-all")) + return git_config_set_multivar(argv[2], argv[3], argv[4], 1); + case 1: default: usage(git_config_set_usage); } @@ -263,11 +263,15 @@ int git_config(config_fn_t fn) /* * Find all the stuff for git_config_set() below. */ + +#define MAX_MATCHES 512 + static struct { int baselen; char* key; regex_t* value_regex; - off_t offset; + int multi_replace; + off_t offset[MAX_MATCHES]; enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state; int seen; } store; @@ -279,12 +283,16 @@ static int store_aux(const char* key, const char* value) if (!strcmp(key, store.key) && (store.value_regex == NULL || !regexec(store.value_regex, value, 0, NULL, 0))) { - if (store.seen == 1) { + if (store.seen == 1 && store.multi_replace == 0) { fprintf(stderr, "Warning: %s has multiple values\n", key); + } else if (store.seen >= MAX_MATCHES) { + fprintf(stderr, "Too many matches\n"); + return 1; } - store.offset = ftell(config_file); + + store.offset[store.seen] = ftell(config_file); store.seen++; } break; @@ -293,14 +301,15 @@ static int store_aux(const char* key, const char* value) store.state = SECTION_END_SEEN; break; } else - store.offset = ftell(config_file); + /* do not increment matches: this is no match */ + store.offset[store.seen] = ftell(config_file); /* fallthru */ case SECTION_END_SEEN: case START: if (!strcmp(key, store.key) && (store.value_regex == NULL || !regexec(store.value_regex, value, 0, NULL, 0))) { - store.offset = ftell(config_file); + store.offset[store.seen] = ftell(config_file); store.state = KEY_SEEN; store.seen++; } else if(!strncmp(key, store.key, store.baselen)) @@ -334,14 +343,38 @@ static void store_write_pair(int fd, const char* key, const char* value) write(fd, "\n", 1); } +static int find_beginning_of_line(const char* contents, int size, + int offset_, int* found_bracket) +{ + int equal_offset = size, bracket_offset = size; + int offset; + + for (offset = offset_-2; offset > 0 + && contents[offset] != '\n'; offset--) + switch (contents[offset]) { + case '=': equal_offset = offset; break; + case ']': bracket_offset = offset; break; + } + if (bracket_offset < equal_offset) { + *found_bracket = 1; + offset = bracket_offset+1; + } else + offset++; + + return offset; +} + int git_config_set(const char* key, const char* value) { - return git_config_set_multivar(key, value, NULL); + return git_config_set_multivar(key, value, NULL, 0); } /* * If value==NULL, unset in (remove from) config, * if value_regex!=NULL, disregard key/value pairs where value does not match. + * if multi_replace==0, nothing, or only one matching key/value is replaced, + * else all matching key/values (regardless how many) are removed, + * before the new pair is written. * * Returns 0 on success. * @@ -360,7 +393,7 @@ int git_config_set(const char* key, const char* value) * */ int git_config_set_multivar(const char* key, const char* value, - const char* value_regex) + const char* value_regex, int multi_replace) { int i; struct stat st; @@ -368,6 +401,8 @@ int git_config_set_multivar(const char* key, const char* value, char* config_file = strdup(git_path("config")); char* lock_file = strdup(git_path("config.lock")); + store.multi_replace = multi_replace; + /* * Since "key" actually contains the section name and the real * key name separated by a dot, we have to know where the dot is. @@ -431,7 +466,7 @@ int git_config_set_multivar(const char* key, const char* value, } else{ int in_fd; char* contents; - int offset, new_line = 0; + int i, copy_begin, copy_end, new_line = 0; if (value_regex == NULL) store.value_regex = NULL; @@ -446,7 +481,7 @@ int git_config_set_multivar(const char* key, const char* value, } } - store.offset = 0; + store.offset[0] = 0; store.state = START; store.seen = 0; @@ -472,52 +507,42 @@ int git_config_set_multivar(const char* key, const char* value, free(store.value_regex); } - /* if nothing to unset, error out */ - if (store.seen == 0 && value == NULL) { + /* if nothing to unset, or too many matches, error out */ + if ((store.seen == 0 && value == NULL) || + (store.seen > 1 && multi_replace == 0)) { close(fd); unlink(lock_file); return 5; } - store.key = (char*)key; - in_fd = open(config_file, O_RDONLY, 0666); contents = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, in_fd, 0); close(in_fd); - if (store.offset == 0) { - store.offset = offset = st.st_size; - } else if (store.state != KEY_SEEN) { - offset = store.offset; - } else { - int equal_offset = st.st_size, - bracket_offset = st.st_size; - - if (value == NULL && store.seen > 1) { - fprintf(stderr, "Cannot remove multivar (%s has %d values\n", key, store.seen); - close(fd); - unlink(lock_file); - return 7; - } - for (offset = store.offset-2; offset > 0 - && contents[offset] != '\n'; offset--) - switch (contents[offset]) { - case '=': equal_offset = offset; break; - case ']': bracket_offset = offset; break; - } - if (bracket_offset < equal_offset) { - new_line = 1; - offset = bracket_offset+1; + if (store.seen == 0) + store.seen = 1; + + for (i = 0, copy_begin = 0; i < store.seen; i++) { + if (store.offset[i] == 0) { + store.offset[i] = copy_end = st.st_size; + } else if (store.state != KEY_SEEN) { + copy_end = store.offset[i]; } else - offset++; + copy_end = find_beginning_of_line( + contents, st.st_size, + store.offset[i]-2, &new_line); + + /* write the first part of the config */ + if (copy_end > copy_begin) { + write(fd, contents + copy_begin, + copy_end - copy_begin); + if (new_line) + write(fd, "\n", 1); + } + copy_begin = store.offset[i]; } - /* write the first part of the config */ - write(fd, contents, offset); - if (new_line) - write(fd, "\n", 1); - /* write the pair (value == NULL means unset) */ if (value != NULL) { if (store.state == START) @@ -526,9 +551,9 @@ int git_config_set_multivar(const char* key, const char* value, } /* write the rest of the config */ - if (store.offset < st.st_size) - write(fd, contents + store.offset, - st.st_size - store.offset); + if (copy_begin < st.st_size) + write(fd, contents + copy_begin, + st.st_size - copy_begin); munmap(contents, st.st_size); unlink(config_file); @@ -544,3 +569,4 @@ int git_config_set_multivar(const char* key, const char* value, return 0; } + diff --git a/t1300-config-set.sh b/t/t1300-config-set.sh index df89216b1..717bf4de7 100644 --- a/t1300-config-set.sh +++ b/t/t1300-config-set.sh @@ -76,9 +76,44 @@ noIndent= sillyValue ; 'nother silly comment # empty line ; comment haha ="beta" # last silly comment +haha = hello + haha = bello [nextSection] noNewline = ouch EOF +cp .git/config .git/config2 + +test_expect_success 'multiple unset' \ + 'git-config-set --unset-all beta.haha' + +cat > expect << EOF +[beta] ; silly comment # another comment +noIndent= sillyValue ; 'nother silly comment + +# empty line + ; comment +[nextSection] noNewline = ouch +EOF + +test_expect_success 'multiple unset is correct' 'cmp .git/config expect' + +mv .git/config2 .git/config + +test_expect_success '--replace-all' \ + 'git-config-set --replace-all beta.haha gamma' + +cat > expect << EOF +[beta] ; silly comment # another comment +noIndent= sillyValue ; 'nother silly comment + +# empty line + ; comment + haha = gamma +[nextSection] noNewline = ouch +EOF + +test_expect_success 'all replaced' 'cmp .git/config expect' + git-config-set beta.haha alpha cat > expect << EOF @@ -108,7 +143,8 @@ EOF test_expect_success 'really really mean test' 'cmp .git/config expect' -git-config-set beta.haha +test_expect_success 'get value' 'test alpha = $(git-config-set beta.haha)' +git-config-set --unset beta.haha cat > expect << EOF [beta] ; silly comment # another comment @@ -137,6 +173,12 @@ EOF test_expect_success 'multivar' 'cmp .git/config expect' +test_expect_failure 'ambiguous get' \ + 'git-config-set --get nextsection.nonewline' + +test_expect_success 'get multivar' \ + 'git-config-set --get-all nextsection.nonewline' + git-config-set nextsection.nonewline "wow3" "wow$" cat > expect << EOF @@ -152,6 +194,8 @@ EOF test_expect_success 'multivar replace' 'cmp .git/config expect' +test_expect_failure 'ambiguous value' 'git-config-set nextsection.nonewline' + test_expect_failure 'ambiguous unset' \ 'git-config-set --unset nextsection.nonewline' |