diff options
Diffstat (limited to 'config.c')
| -rw-r--r-- | config.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/config.c b/config.c new file mode 100644 index 0000000..519fecf --- /dev/null +++ b/config.c @@ -0,0 +1,236 @@ + +#include "cache.h" + +#define MAXNAME (256) + +static FILE *config_file; +static int config_linenr; +static int get_next_char(void) +{ + int c; + FILE *f; + + c = '\n'; + if ((f = config_file) != NULL) { + c = fgetc(f); + if (c == '\n') + config_linenr++; + if (c == EOF) { + config_file = NULL; + c = '\n'; + } + } + return c; +} + +static char *parse_value(void) +{ + static char value[1024]; + int quote = 0, comment = 0, len = 0, space = 0; + + for (;;) { + int c = get_next_char(); + if (len >= sizeof(value)) + return NULL; + if (c == '\n') { + if (quote) + return NULL; + value[len] = 0; + return value; + } + if (comment) + continue; + if (isspace(c) && !quote) { + space = 1; + continue; + } + if (space) { + if (len) + value[len++] = ' '; + space = 0; + } + if (c == '\\') { + c = get_next_char(); + switch (c) { + case '\n': + continue; + case 't': + c = '\t'; + break; + case 'b': + c = '\b'; + break; + case 'n': + c = '\n'; + break; + /* Some characters escape as themselves */ + case '\\': case '"': + break; + /* Reject unknown escape sequences */ + default: + return NULL; + } + value[len++] = c; + continue; + } + if (c == '"') { + quote = 1-quote; + continue; + } + if (!quote) { + if (c == ';' || c == '#') { + comment = 1; + continue; + } + } + value[len++] = c; + } +} + +static int get_value(config_fn_t fn, char *name, unsigned int len) +{ + int c; + char *value; + + /* Get the full name */ + for (;;) { + c = get_next_char(); + if (c == EOF) + break; + if (!isalnum(c)) + break; + name[len++] = tolower(c); + if (len >= MAXNAME) + return -1; + } + name[len] = 0; + while (c == ' ' || c == '\t') + c = get_next_char(); + + value = NULL; + if (c != '\n') { + if (c != '=') + return -1; + value = parse_value(); + if (!value) + return -1; + } + return fn(name, value); +} + +static int get_base_var(char *name) +{ + int baselen = 0; + + for (;;) { + int c = get_next_char(); + if (c == EOF) + return -1; + if (c == ']') + return baselen; + if (!isalnum(c)) + return -1; + if (baselen > MAXNAME / 2) + return -1; + name[baselen++] = tolower(c); + } +} + +static int git_parse_file(config_fn_t fn) +{ + int comment = 0; + int baselen = 0; + static char var[MAXNAME]; + + for (;;) { + int c = get_next_char(); + if (c == '\n') { + /* EOF? */ + if (!config_file) + return 0; + comment = 0; + continue; + } + if (comment || isspace(c)) + continue; + if (c == '#' || c == ';') { + comment = 1; + continue; + } + if (c == '[') { + baselen = get_base_var(var); + if (baselen <= 0) + break; + var[baselen++] = '.'; + var[baselen] = 0; + continue; + } + if (!isalpha(c)) + break; + var[baselen] = tolower(c); + if (get_value(fn, var, baselen+1) < 0) + break; + } + die("bad config file line %d", config_linenr); +} + +int git_config_int(const char *name, const char *value) +{ + if (value && *value) { + char *end; + int val = strtol(value, &end, 0); + if (!*end) + return val; + } + die("bad config value for '%s'", name); +} + +int git_config_bool(const char *name, const char *value) +{ + if (!value) + return 1; + if (!*value) + return 0; + if (!strcasecmp(value, "true")) + return 1; + if (!strcasecmp(value, "false")) + return 0; + return git_config_int(name, value) != 0; +} + +int git_default_config(const char *var, const char *value) +{ + /* This needs a better name */ + if (!strcmp(var, "core.filemode")) { + trust_executable_bit = git_config_bool(var, value); + return 0; + } + + if (!strcmp(var, "user.name")) { + strncpy(git_default_name, value, sizeof(git_default_name)); + return 0; + } + + if (!strcmp(var, "user.email")) { + strncpy(git_default_email, value, sizeof(git_default_email)); + return 0; + } + + /* Add other config variables here.. */ + return 0; +} + +int git_config(config_fn_t fn) +{ + int ret; + FILE *f = fopen(git_path("config"), "r"); + + ret = -1; + if (f) { + config_file = f; + config_linenr = 1; + ret = git_parse_file(fn); + fclose(f); + } + return ret; +} |