Documentation: expand 'git diff' SEE ALSO section

diff --git a/config.c b/config.c
index 64e41bea22466a81df5eda274bc97e3860d6cde6..4b0a82040e7982ab936ed52b2bb3405bc85b80f8 100644 (file)
--- a/config.c
+++ b/config.c
@@ -7,6 +7,8 @@
  */
 #include "cache.h"
 #include "exec_cmd.h"
+#include "strbuf.h"
+#include "quote.h"
 
 #define MAXNAME (256)
 
@@ -18,6 +20,92 @@ static int zlib_compression_seen;
 
 const char *config_exclusive_filename = NULL;
 
+struct config_item
+{
+       struct config_item *next;
+       char *name;
+       char *value;
+};
+static struct config_item *config_parameters;
+static struct config_item **config_parameters_tail = &config_parameters;
+
+static void lowercase(char *p)
+{
+       for (; *p; p++)
+               *p = tolower(*p);
+}
+
+void git_config_push_parameter(const char *text)
+{
+       struct strbuf env = STRBUF_INIT;
+       const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
+       if (old) {
+               strbuf_addstr(&env, old);
+               strbuf_addch(&env, ' ');
+       }
+       sq_quote_buf(&env, text);
+       setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
+       strbuf_release(&env);
+}
+
+int git_config_parse_parameter(const char *text)
+{
+       struct config_item *ct;
+       struct strbuf tmp = STRBUF_INIT;
+       struct strbuf **pair;
+       strbuf_addstr(&tmp, text);
+       pair = strbuf_split(&tmp, '=');
+       if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
+               strbuf_setlen(pair[0], pair[0]->len - 1);
+       strbuf_trim(pair[0]);
+       if (!pair[0]->len) {
+               strbuf_list_free(pair);
+               return -1;
+       }
+       ct = xcalloc(1, sizeof(struct config_item));
+       ct->name = strbuf_detach(pair[0], NULL);
+       if (pair[1]) {
+               strbuf_trim(pair[1]);
+               ct->value = strbuf_detach(pair[1], NULL);
+       }
+       strbuf_list_free(pair);
+       lowercase(ct->name);
+       *config_parameters_tail = ct;
+       config_parameters_tail = &ct->next;
+       return 0;
+}
+
+int git_config_parse_environment(void) {
+       const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
+       char *envw;
+       const char **argv = NULL;
+       int nr = 0, alloc = 0;
+       int i;
+
+       if (!env)
+               return 0;
+       /* sq_dequote will write over it */
+       envw = xstrdup(env);
+
+       if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
+               free(envw);
+               return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
+       }
+
+       for (i = 0; i < nr; i++) {
+               if (git_config_parse_parameter(argv[i]) < 0) {
+                       error("bogus config parameter: %s", argv[i]);
+                       free(argv);
+                       free(envw);
+                       return -1;
+               }
+       }
+
+       free(argv);
+       free(envw);
+       return 0;
+}
+
 static int get_next_char(void)
 {
        int c;
@@ -474,7 +562,9 @@ static int git_default_core_config(const char *var, const char *value)
 
        if (!strcmp(var, "core.autocrlf")) {
                if (value && !strcasecmp(value, "input")) {
-                       auto_crlf = -1;
+                       if (eol == EOL_CRLF)
+                               return error("core.autocrlf=input conflicts with core.eol=crlf");
+                       auto_crlf = AUTO_CRLF_INPUT;
                        return 0;
                }
                auto_crlf = git_config_bool(var, value);
@@ -490,6 +580,20 @@ static int git_default_core_config(const char *var, const char *value)
                return 0;
        }
 
+       if (!strcmp(var, "core.eol")) {
+               if (value && !strcasecmp(value, "lf"))
+                       eol = EOL_LF;
+               else if (value && !strcasecmp(value, "crlf"))
+                       eol = EOL_CRLF;
+               else if (value && !strcasecmp(value, "native"))
+                       eol = EOL_NATIVE;
+               else
+                       eol = EOL_UNSET;
+               if (eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
+                       return error("core.autocrlf=input conflicts with core.eol=crlf");
+               return 0;
+       }
+
        if (!strcmp(var, "core.notesref")) {
                notes_ref_name = xstrdup(value);
                return 0;
@@ -501,6 +605,9 @@ static int git_default_core_config(const char *var, const char *value)
        if (!strcmp(var, "core.editor"))
                return git_config_string(&editor_program, var, value);
 
+       if (!strcmp(var, "core.askpass"))
+               return git_config_string(&askpass_program, var, value);
+
        if (!strcmp(var, "core.excludesfile"))
                return git_config_pathname(&excludes_file, var, value);
 
@@ -696,7 +803,7 @@ const char *git_etc_gitconfig(void)
        return system_wide;
 }
 
-static int git_env_bool(const char *k, int def)
+int git_env_bool(const char *k, int def)
 {
        const char *v = getenv(k);
        return v ? git_config_bool(k, v) : def;
@@ -712,6 +819,22 @@ int git_config_global(void)
        return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0);
 }
 
+int git_config_from_parameters(config_fn_t fn, void *data)
+{
+       static int loaded_environment;
+       const struct config_item *ct;
+
+       if (!loaded_environment) {
+               if (git_config_parse_environment() < 0)
+                       return -1;
+               loaded_environment = 1;
+       }
+       for (ct = config_parameters; ct; ct = ct->next)
+               if (fn(ct->name, ct->value, data) < 0)
+                       return -1;
+       return 0;
+}
+
 int git_config(config_fn_t fn, void *data)
 {
        int ret = 0, found = 0;
@@ -743,6 +866,11 @@ int git_config(config_fn_t fn, void *data)
                found += 1;
        }
        free(repo_config);
+
+       ret += git_config_from_parameters(fn, data);
+       if (config_parameters)
+               found += 1;
+
        if (found == 0)
                return -1;
        return ret;