From d14f776402d9f7040cc71ff6e3b992b2e019526a Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 9 May 2006 12:24:02 -0700 Subject: [PATCH] git config syntax updates This updates the hierarchical section name syntax to [section+""] where the only rule for "randomstring" is that it can't contain a newline, and if you really want to insert a double-quote, you do it with \". It turns that into the section name "secion.randomstring". The "section" part is still case insensitive, but the "randomstring" part is case sensitive. So you could use this for things like [email "torvalds@osdl.org"] name = Linus Torvalds if you wanted to do the "email->name" conversion as part of the config file format (I'm not claiming that is sensible, I'm just giving it as an insane example). That would show up as the association email.torvalds@osdl.org.name -> Linus Torvalds which is easy to parse (the "." in the email _looks_ ambiguous, but it isn't: you know that there will always be a single key-name, so you find the key name with "strrchr(name, '.')" and things are entirely unambiguous). Repo-config is updated to be able to parse the new format, and also write things out in the new format. [jc: rolled two patches from Linus and one fix-up from Sean into one, with additional adjustments for t/t1300 test to check the case insensitiveness of section base and variable and case sensitiveness of the extended section part. Then stripped some part off to make the result applicable to the stale 1.3.X series that does not have recent enhancements. ] Signed-off-by: Linus Torvalds Signed-off-by: Sean Estabrooks Signed-off-by: Junio C Hamano --- config.c | 94 ++++++++++++++++++++++++++++++++++++------ repo-config.c | 10 +++-- t/t1300-repo-config.sh | 6 +-- 3 files changed, 90 insertions(+), 20 deletions(-) diff --git a/config.c b/config.c index 0f518c957..0248c6d8a 100644 --- a/config.c +++ b/config.c @@ -134,6 +134,41 @@ static int get_value(config_fn_t fn, char *name, unsigned int len) return fn(name, value); } +static int get_extended_base_var(char *name, int baselen, int c) +{ + do { + if (c == '\n') + return -1; + c = get_next_char(); + } while (isspace(c)); + + /* We require the format to be '[base "extension"]' */ + if (c != '"') + return -1; + name[baselen++] = '.'; + + for (;;) { + int c = get_next_char(); + if (c == '\n') + return -1; + if (c == '"') + break; + if (c == '\\') { + c = get_next_char(); + if (c == '\n') + return -1; + } + name[baselen++] = c; + if (baselen > MAXNAME / 2) + return -1; + } + + /* Final ']' */ + if (get_next_char() != ']') + return -1; + return baselen; +} + static int get_base_var(char *name) { int baselen = 0; @@ -144,6 +179,8 @@ static int get_base_var(char *name) return -1; if (c == ']') return baselen; + if (isspace(c)) + return get_extended_base_var(name, baselen, c); if (!isalnum(c) && c != '.') return -1; if (baselen > MAXNAME / 2) @@ -335,10 +372,12 @@ static int store_aux(const char* key, const char* value) store.offset[store.seen] = ftell(config_file); store.state = KEY_SEEN; store.seen++; - } else if (strrchr(key, '.') - key == store.baselen && + } else { + if (strrchr(key, '.') - key == store.baselen && !strncmp(key, store.key, store.baselen)) { store.state = SECTION_SEEN; store.offset[store.seen] = ftell(config_file); + } } } return 0; @@ -346,8 +385,30 @@ static int store_aux(const char* key, const char* value) static void store_write_section(int fd, const char* key) { + const char *dot = strchr(key, '.'); + int len1 = store.baselen, len2 = -1; + + dot = strchr(key, '.'); + if (dot) { + int dotlen = dot - key; + if (dotlen < len1) { + len2 = len1 - dotlen - 1; + len1 = dotlen; + } + } + write(fd, "[", 1); - write(fd, key, store.baselen); + write(fd, key, len1); + if (len2 >= 0) { + write(fd, " \"", 2); + while (--len2 >= 0) { + unsigned char c = *++dot; + if (c == '"') + write(fd, "\\", 1); + write(fd, &c, 1); + } + write(fd, "\"", 1); + } write(fd, "]\n", 2); } @@ -421,7 +482,7 @@ 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, int multi_replace) { - int i; + int i, dot; int fd = -1, in_fd; int ret; char* config_filename = strdup(git_path("config")); @@ -446,16 +507,23 @@ int git_config_set_multivar(const char* key, const char* value, * Validate the key and while at it, lower case it for matching. */ store.key = (char*)malloc(strlen(key)+1); - for (i = 0; key[i]; i++) - if (i != store.baselen && - ((!isalnum(key[i]) && key[i] != '.') || - (i == store.baselen+1 && !isalpha(key[i])))) { - fprintf(stderr, "invalid key: %s\n", key); - free(store.key); - ret = 1; - goto out_free; - } else - store.key[i] = tolower(key[i]); + dot = 0; + for (i = 0; key[i]; i++) { + unsigned char c = key[i]; + if (c == '.') + dot = 1; + /* Leave the extended basename untouched.. */ + if (!dot || i > store.baselen) { + if (!isalnum(c) || (i == store.baselen+1 && !isalpha(c))) { + fprintf(stderr, "invalid key: %s\n", key); + free(store.key); + ret = 1; + goto out_free; + } + c = tolower(c); + } + store.key[i] = c; + } store.key[i] = 0; /* diff --git a/repo-config.c b/repo-config.c index c5ebb7668..58b6c5284 100644 --- a/repo-config.c +++ b/repo-config.c @@ -48,11 +48,13 @@ static int show_config(const char* key_, const char* value_) static int get_value(const char* key_, const char* regex_) { int i; + char *tl; - key = malloc(strlen(key_)+1); - for (i = 0; key_[i]; i++) - key[i] = tolower(key_[i]); - key[i] = 0; + key = strdup(key_); + for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl) + *tl = tolower(*tl); + for (tl=key; *tl && *tl != '.'; ++tl) + *tl = tolower(*tl); if (regex_) { if (regex_[0] == '!') { diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh index ab4dd5c4c..028d15956 100755 --- a/t/t1300-repo-config.sh +++ b/t/t1300-repo-config.sh @@ -229,7 +229,7 @@ test_expect_failure 'invalid key' 'git-repo-config inval.2key blabla' test_expect_success 'correct key' 'git-repo-config 123456.a123 987' test_expect_success 'hierarchical section' \ - 'git-repo-config 1.2.3.alpha beta' + 'git-repo-config Version.1.2.3eX.Alpha beta' cat > expect << EOF [beta] ; silly comment # another comment @@ -241,8 +241,8 @@ noIndent= sillyValue ; 'nother silly comment NoNewLine = wow2 for me [123456] a123 = 987 -[1.2.3] - alpha = beta +[Version "1.2.3eX"] + Alpha = beta EOF test_expect_success 'hierarchical section value' 'cmp .git/config expect' -- 2.26.2