diff: honor binariness specified in attributes
[gitweb.git] / config.c
index 3cae3901aa9b50e8d04a8ce2633a1a1ef8ed0f6c..561ee3b576ae32f10959d3f1b76f6cc62e31d45a 100644 (file)
--- a/config.c
+++ b/config.c
@@ -6,13 +6,14 @@
  *
  */
 #include "cache.h"
-#include <regex.h>
 
 #define MAXNAME (256)
 
 static FILE *config_file;
 static const char *config_file_name;
 static int config_linenr;
+static int zlib_compression_seen;
+
 static int get_next_char(void)
 {
        int c;
@@ -239,6 +240,12 @@ int git_config_int(const char *name, const char *value)
                int val = strtol(value, &end, 0);
                if (!*end)
                        return val;
+               if (!strcasecmp(end, "k"))
+                       return val * 1024;
+               if (!strcasecmp(end, "m"))
+                       return val * 1024 * 1024;
+               if (!strcasecmp(end, "g"))
+                       return val * 1024 * 1024 * 1024;
        }
        die("bad config value for '%s' in %s", name, config_file_name);
 }
@@ -264,6 +271,21 @@ int git_default_config(const char *var, const char *value)
                return 0;
        }
 
+       if (!strcmp(var, "core.quotepath")) {
+               quote_path_fully = git_config_bool(var, value);
+               return 0;
+       }
+
+       if (!strcmp(var, "core.symlinks")) {
+               has_symlinks = git_config_bool(var, value);
+               return 0;
+       }
+
+       if (!strcmp(var, "core.bare")) {
+               is_bare_repository_cfg = git_config_bool(var, value);
+               return 0;
+       }
+
        if (!strcmp(var, "core.ignorestat")) {
                assume_unchanged = git_config_bool(var, value);
                return 0;
@@ -284,8 +306,14 @@ int git_default_config(const char *var, const char *value)
                return 0;
        }
 
-       if (!strcmp(var, "core.legacyheaders")) {
-               use_legacy_headers = git_config_bool(var, value);
+       if (!strcmp(var, "core.loosecompression")) {
+               int level = git_config_int(var, value);
+               if (level == -1)
+                       level = Z_DEFAULT_COMPRESSION;
+               else if (level < 0 || level > Z_BEST_COMPRESSION)
+                       die("bad zlib compression level %d", level);
+               zlib_compression_level = level;
+               zlib_compression_seen = 1;
                return 0;
        }
 
@@ -295,7 +323,41 @@ int git_default_config(const char *var, const char *value)
                        level = Z_DEFAULT_COMPRESSION;
                else if (level < 0 || level > Z_BEST_COMPRESSION)
                        die("bad zlib compression level %d", level);
-               zlib_compression_level = level;
+               core_compression_level = level;
+               core_compression_seen = 1;
+               if (!zlib_compression_seen)
+                       zlib_compression_level = level;
+               return 0;
+       }
+
+       if (!strcmp(var, "core.packedgitwindowsize")) {
+               int pgsz_x2 = getpagesize() * 2;
+               packed_git_window_size = git_config_int(var, value);
+
+               /* This value must be multiple of (pagesize * 2) */
+               packed_git_window_size /= pgsz_x2;
+               if (packed_git_window_size < 1)
+                       packed_git_window_size = 1;
+               packed_git_window_size *= pgsz_x2;
+               return 0;
+       }
+
+       if (!strcmp(var, "core.packedgitlimit")) {
+               packed_git_limit = git_config_int(var, value);
+               return 0;
+       }
+
+       if (!strcmp(var, "core.deltabasecachelimit")) {
+               delta_base_cache_limit = git_config_int(var, value);
+               return 0;
+       }
+
+       if (!strcmp(var, "core.autocrlf")) {
+               if (value && !strcasecmp(value, "input")) {
+                       auto_crlf = -1;
+                       return 0;
+               }
+               auto_crlf = git_config_bool(var, value);
                return 0;
        }
 
@@ -310,15 +372,26 @@ int git_default_config(const char *var, const char *value)
        }
 
        if (!strcmp(var, "i18n.commitencoding")) {
-               strlcpy(git_commit_encoding, value, sizeof(git_commit_encoding));
+               git_commit_encoding = xstrdup(value);
                return 0;
        }
 
-       if (!strcmp(var, "pager.color")) {
+       if (!strcmp(var, "i18n.logoutputencoding")) {
+               git_log_output_encoding = xstrdup(value);
+               return 0;
+       }
+
+
+       if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
                pager_use_color = git_config_bool(var,value);
                return 0;
        }
 
+       if (!strcmp(var, "core.pager")) {
+               pager_program = xstrdup(value);
+               return 0;
+       }
+
        /* Add other config variables here and to Documentation/config.txt. */
        return 0;
 }
@@ -350,10 +423,12 @@ int git_config(config_fn_t fn)
         * $GIT_CONFIG_LOCAL will make it process it in addition to the
         * global config file, the same way it would the per-repository
         * config file otherwise. */
-       filename = getenv("GIT_CONFIG");
+       filename = getenv(CONFIG_ENVIRONMENT);
        if (!filename) {
+               if (!access(ETC_GITCONFIG, R_OK))
+                       ret += git_config_from_file(fn, ETC_GITCONFIG);
                home = getenv("HOME");
-               filename = getenv("GIT_CONFIG_LOCAL");
+               filename = getenv(CONFIG_LOCAL_ENVIRONMENT);
                if (!filename)
                        filename = repo_config = xstrdup(git_path("config"));
        }
@@ -382,7 +457,7 @@ static struct {
        int do_not_match;
        regex_t* value_regex;
        int multi_replace;
-       off_t offset[MAX_MATCHES];
+       size_t offset[MAX_MATCHES];
        enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
        int seen;
 } store;
@@ -397,6 +472,9 @@ static int matches(const char* key, const char* value)
 
 static int store_aux(const char* key, const char* value)
 {
+       const char *ep;
+       size_t section_len;
+
        switch (store.state) {
        case KEY_SEEN:
                if (matches(key, value)) {
@@ -414,12 +492,29 @@ static int store_aux(const char* key, const char* value)
                }
                break;
        case SECTION_SEEN:
-               if (strncmp(key, store.key, store.baselen+1)) {
+               /*
+                * What we are looking for is in store.key (both
+                * section and var), and its section part is baselen
+                * long.  We found key (again, both section and var).
+                * We would want to know if this key is in the same
+                * section as what we are looking for.  We already
+                * know we are in the same section as what should
+                * hold store.key.
+                */
+               ep = strrchr(key, '.');
+               section_len = ep - key;
+
+               if ((section_len != store.baselen) ||
+                   memcmp(key, store.key, section_len+1)) {
                        store.state = SECTION_END_SEEN;
                        break;
-               } else
-                       /* do not increment matches: this is no match */
-                       store.offset[store.seen] = ftell(config_file);
+               }
+
+               /*
+                * Do not increment matches: this is no match, but we
+                * just made sure we are in the desired section.
+                */
+               store.offset[store.seen] = ftell(config_file);
                /* fallthru */
        case SECTION_END_SEEN:
        case START:
@@ -438,7 +533,15 @@ static int store_aux(const char* key, const char* value)
        return 0;
 }
 
-static void store_write_section(int fd, const char* key)
+static int write_error(void)
+{
+       fprintf(stderr, "Failed to write new configuration file\n");
+
+       /* Same error code as "failed to rename". */
+       return 4;
+}
+
+static int store_write_section(int fd, const char* key)
 {
        const char *dot = strchr(key, '.');
        int len1 = store.baselen, len2 = -1;
@@ -452,46 +555,83 @@ static void store_write_section(int fd, const char* key)
                }
        }
 
-       write(fd, "[", 1);
-       write(fd, key, len1);
+       if (write_in_full(fd, "[", 1) != 1 ||
+           write_in_full(fd, key, len1) != len1)
+               return 0;
        if (len2 >= 0) {
-               write(fd, " \"", 2);
+               if (write_in_full(fd, " \"", 2) != 2)
+                       return 0;
                while (--len2 >= 0) {
                        unsigned char c = *++dot;
                        if (c == '"')
-                               write(fd, "\\", 1);
-                       write(fd, &c, 1);
+                               if (write_in_full(fd, "\\", 1) != 1)
+                                       return 0;
+                       if (write_in_full(fd, &c, 1) != 1)
+                               return 0;
                }
-               write(fd, "\"", 1);
+               if (write_in_full(fd, "\"", 1) != 1)
+                       return 0;
        }
-       write(fd, "]\n", 2);
+       if (write_in_full(fd, "]\n", 2) != 2)
+               return 0;
+
+       return 1;
 }
 
-static void store_write_pair(int fd, const char* key, const char* value)
+static int store_write_pair(int fd, const char* key, const char* value)
 {
        int i;
+       int length = strlen(key+store.baselen+1);
+       int quote = 0;
 
-       write(fd, "\t", 1);
-       write(fd, key+store.baselen+1,
-               strlen(key+store.baselen+1));
-       write(fd, " = ", 3);
+       /* Check to see if the value needs to be quoted. */
+       if (value[0] == ' ')
+               quote = 1;
+       for (i = 0; value[i]; i++)
+               if (value[i] == ';' || value[i] == '#')
+                       quote = 1;
+       if (value[i-1] == ' ')
+               quote = 1;
+
+       if (write_in_full(fd, "\t", 1) != 1 ||
+           write_in_full(fd, key+store.baselen+1, length) != length ||
+           write_in_full(fd, " = ", 3) != 3)
+               return 0;
+       if (quote && write_in_full(fd, "\"", 1) != 1)
+               return 0;
        for (i = 0; value[i]; i++)
                switch (value[i]) {
-               case '\n': write(fd, "\\n", 2); break;
-               case '\t': write(fd, "\\t", 2); break;
-               case '"': case '\\': write(fd, "\\", 1);
-               default: write(fd, value+i, 1);
-       }
-       write(fd, "\n", 1);
+               case '\n':
+                       if (write_in_full(fd, "\\n", 2) != 2)
+                               return 0;
+                       break;
+               case '\t':
+                       if (write_in_full(fd, "\\t", 2) != 2)
+                               return 0;
+                       break;
+               case '"':
+               case '\\':
+                       if (write_in_full(fd, "\\", 1) != 1)
+                               return 0;
+               default:
+                       if (write_in_full(fd, value+i, 1) != 1)
+                               return 0;
+                       break;
+               }
+       if (quote && write_in_full(fd, "\"", 1) != 1)
+               return 0;
+       if (write_in_full(fd, "\n", 1) != 1)
+               return 0;
+       return 1;
 }
 
-static int find_beginning_of_line(const char* contents, int size,
-       int offset_, int* found_bracket)
+static ssize_t find_beginning_of_line(const char* contents, size_t size,
+       size_t offset_, int* found_bracket)
 {
-       int equal_offset = size, bracket_offset = size;
-       int offset;
+       size_t equal_offset = size, bracket_offset = size;
+       ssize_t offset;
 
-       for (offset = offset_-2; offset > 0 
+       for (offset = offset_-2; offset > 0
                        && contents[offset] != '\n'; offset--)
                switch (contents[offset]) {
                        case '=': equal_offset = offset; break;
@@ -544,9 +684,9 @@ int git_config_set_multivar(const char* key, const char* value,
        char* lock_file;
        const char* last_dot = strrchr(key, '.');
 
-       config_filename = getenv("GIT_CONFIG");
+       config_filename = getenv(CONFIG_ENVIRONMENT);
        if (!config_filename) {
-               config_filename = getenv("GIT_CONFIG_LOCAL");
+               config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT);
                if (!config_filename)
                        config_filename  = git_path("config");
        }
@@ -585,6 +725,11 @@ int git_config_set_multivar(const char* key, const char* value,
                                goto out_free;
                        }
                        c = tolower(c);
+               } else if (c == '\n') {
+                       fprintf(stderr, "invalid key (newline): %s\n", key);
+                       free(store.key);
+                       ret = 1;
+                       goto out_free;
                }
                store.key[i] = c;
        }
@@ -622,12 +767,14 @@ int git_config_set_multivar(const char* key, const char* value,
                }
 
                store.key = (char*)key;
-               store_write_section(fd, key);
-               store_write_pair(fd, key, value);
-       } else{
+               if (!store_write_section(fd, key) ||
+                   !store_write_pair(fd, key, value))
+                       goto write_err_out;
+       } else {
                struct stat st;
                char* contents;
-               int i, copy_begin, copy_end, new_line = 0;
+               size_t contents_sz, copy_begin, copy_end;
+               int i, new_line = 0;
 
                if (value_regex == NULL)
                        store.value_regex = NULL;
@@ -684,7 +831,8 @@ int git_config_set_multivar(const char* key, const char* value,
                }
 
                fstat(in_fd, &st);
-               contents = mmap(NULL, st.st_size, PROT_READ,
+               contents_sz = xsize_t(st.st_size);
+               contents = xmmap(NULL, contents_sz, PROT_READ,
                        MAP_PRIVATE, in_fd, 0);
                close(in_fd);
 
@@ -693,37 +841,45 @@ int git_config_set_multivar(const char* key, const char* value,
 
                for (i = 0, copy_begin = 0; i < store.seen; i++) {
                        if (store.offset[i] == 0) {
-                               store.offset[i] = copy_end = st.st_size;
+                               store.offset[i] = copy_end = contents_sz;
                        } else if (store.state != KEY_SEEN) {
                                copy_end = store.offset[i];
                        } else
                                copy_end = find_beginning_of_line(
-                                       contents, st.st_size,
+                                       contents, contents_sz,
                                        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);
+                               if (write_in_full(fd, contents + copy_begin,
+                                                 copy_end - copy_begin) <
+                                   copy_end - copy_begin)
+                                       goto write_err_out;
+                               if (new_line &&
+                                   write_in_full(fd, "\n", 1) != 1)
+                                       goto write_err_out;
                        }
                        copy_begin = store.offset[i];
                }
 
                /* write the pair (value == NULL means unset) */
                if (value != NULL) {
-                       if (store.state == START)
-                               store_write_section(fd, key);
-                       store_write_pair(fd, key, value);
+                       if (store.state == START) {
+                               if (!store_write_section(fd, key))
+                                       goto write_err_out;
+                       }
+                       if (!store_write_pair(fd, key, value))
+                               goto write_err_out;
                }
 
                /* write the rest of the config */
-               if (copy_begin < st.st_size)
-                       write(fd, contents + copy_begin,
-                               st.st_size - copy_begin);
+               if (copy_begin < contents_sz)
+                       if (write_in_full(fd, contents + copy_begin,
+                                         contents_sz - copy_begin) <
+                           contents_sz - copy_begin)
+                               goto write_err_out;
 
-               munmap(contents, st.st_size);
+               munmap(contents, contents_sz);
                unlink(config_filename);
        }
 
@@ -744,6 +900,102 @@ int git_config_set_multivar(const char* key, const char* value,
                free(lock_file);
        }
        return ret;
+
+write_err_out:
+       ret = write_error();
+       goto out_free;
+
+}
+
+static int section_name_match (const char *buf, const char *name)
+{
+       int i = 0, j = 0, dot = 0;
+       for (; buf[i] && buf[i] != ']'; i++) {
+               if (!dot && isspace(buf[i])) {
+                       dot = 1;
+                       if (name[j++] != '.')
+                               break;
+                       for (i++; isspace(buf[i]); i++)
+                               ; /* do nothing */
+                       if (buf[i] != '"')
+                               break;
+                       continue;
+               }
+               if (buf[i] == '\\' && dot)
+                       i++;
+               else if (buf[i] == '"' && dot) {
+                       for (i++; isspace(buf[i]); i++)
+                               ; /* do_nothing */
+                       break;
+               }
+               if (buf[i] != name[j++])
+                       break;
+       }
+       return (buf[i] == ']' && name[j] == 0);
 }
 
+/* if new_name == NULL, the section is removed instead */
+int git_config_rename_section(const char *old_name, const char *new_name)
+{
+       int ret = 0, remove = 0;
+       char *config_filename;
+       struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
+       int out_fd;
+       char buf[1024];
 
+       config_filename = getenv(CONFIG_ENVIRONMENT);
+       if (!config_filename) {
+               config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT);
+               if (!config_filename)
+                       config_filename  = git_path("config");
+       }
+       config_filename = xstrdup(config_filename);
+       out_fd = hold_lock_file_for_update(lock, config_filename, 0);
+       if (out_fd < 0) {
+               ret = error("Could not lock config file!");
+               goto out;
+       }
+
+       if (!(config_file = fopen(config_filename, "rb"))) {
+               /* no config file means nothing to rename, no error */
+               goto unlock_and_out;
+       }
+
+       while (fgets(buf, sizeof(buf), config_file)) {
+               int i;
+               int length;
+               for (i = 0; buf[i] && isspace(buf[i]); i++)
+                       ; /* do nothing */
+               if (buf[i] == '[') {
+                       /* it's a section */
+                       if (section_name_match (&buf[i+1], old_name)) {
+                               ret++;
+                               if (new_name == NULL) {
+                                       remove = 1;
+                                       continue;
+                               }
+                               store.baselen = strlen(new_name);
+                               if (!store_write_section(out_fd, new_name)) {
+                                       ret = write_error();
+                                       goto out;
+                               }
+                               continue;
+                       }
+                       remove = 0;
+               }
+               if (remove)
+                       continue;
+               length = strlen(buf);
+               if (write_in_full(out_fd, buf, length) != length) {
+                       ret = write_error();
+                       goto out;
+               }
+       }
+       fclose(config_file);
+ unlock_and_out:
+       if (close(out_fd) || commit_lock_file(lock) < 0)
+                       ret = error("Cannot commit config file!");
+ out:
+       free(config_filename);
+       return ret;
+}