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add read_author_script() to libgit
Add read_author_script() to sequencer.c based on the implementation in builtin/am.c and update read_am_author_script() to use read_author_script(). The sequencer code that reads the author script will be updated in the next commit. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Phillip Wood
Junio C Hamano
parent
a75d351388
commit
bcd33ec25f
86
builtin/am.c
86
builtin/am.c
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@ -260,36 +260,6 @@ static int read_state_file(struct strbuf *sb, const struct am_state *state,
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die_errno(_("could not read '%s'"), am_path(state, file));
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}
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/**
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* Take a series of KEY='VALUE' lines where VALUE part is
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* sq-quoted, and append <KEY, VALUE> at the end of the string list
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*/
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static int parse_key_value_squoted(char *buf, struct string_list *list)
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{
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while (*buf) {
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struct string_list_item *item;
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char *np;
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char *cp = strchr(buf, '=');
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if (!cp) {
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np = strchrnul(buf, '\n');
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return error(_("unable to parse '%.*s'"),
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(int) (np - buf), buf);
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}
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np = strchrnul(cp, '\n');
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*cp++ = '\0';
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item = string_list_append(list, buf);
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buf = np + (*np == '\n');
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*np = '\0';
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cp = sq_dequote(cp);
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if (!cp)
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return error(_("unable to dequote value of '%s'"),
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item->string);
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item->util = xstrdup(cp);
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}
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return 0;
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}
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/**
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* Reads and parses the state directory's "author-script" file, and sets
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* state->author_name, state->author_email and state->author_date accordingly.
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@ -309,65 +279,13 @@ static int parse_key_value_squoted(char *buf, struct string_list *list)
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static int read_am_author_script(struct am_state *state)
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{
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const char *filename = am_path(state, "author-script");
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struct strbuf buf = STRBUF_INIT;
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struct string_list kv = STRING_LIST_INIT_DUP;
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int retval = -1; /* assume failure */
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int i, name_i = -2, email_i = -2, date_i = -2, err = 0;
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int fd;
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assert(!state->author_name);
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assert(!state->author_email);
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assert(!state->author_date);
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fd = open(filename, O_RDONLY);
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if (fd < 0) {
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if (errno == ENOENT)
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return 0;
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return error_errno(_("could not open '%s' for reading"),
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filename);
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}
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strbuf_read(&buf, fd, 0);
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close(fd);
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if (parse_key_value_squoted(buf.buf, &kv))
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goto finish;
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for (i = 0; i < kv.nr; i++) {
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if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) {
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if (name_i != -2)
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name_i = error(_("'GIT_AUTHOR_NAME' already given"));
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else
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name_i = i;
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} else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) {
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if (email_i != -2)
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email_i = error(_("'GIT_AUTHOR_EMAIL' already given"));
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else
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email_i = i;
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} else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) {
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if (date_i != -2)
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date_i = error(_("'GIT_AUTHOR_DATE' already given"));
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else
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date_i = i;
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} else {
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err = error(_("unknown variable '%s'"),
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kv.items[i].string);
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}
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}
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if (name_i == -2)
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error(_("missing 'GIT_AUTHOR_NAME'"));
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if (email_i == -2)
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error(_("missing 'GIT_AUTHOR_EMAIL'"));
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if (date_i == -2)
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error(_("missing 'GIT_AUTHOR_DATE'"));
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if (date_i < 0 || email_i < 0 || date_i < 0 || err)
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goto finish;
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state->author_name = kv.items[name_i].util;
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state->author_email = kv.items[email_i].util;
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state->author_date = kv.items[date_i].util;
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retval = 0;
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finish:
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string_list_clear(&kv, !!retval);
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strbuf_release(&buf);
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return retval;
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return read_author_script(filename, &state->author_name,
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&state->author_email, &state->author_date, 1);
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}
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/**
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105
sequencer.c
105
sequencer.c
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@ -664,6 +664,111 @@ static int write_author_script(const char *message)
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return res;
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}
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/**
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* Take a series of KEY='VALUE' lines where VALUE part is
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* sq-quoted, and append <KEY, VALUE> at the end of the string list
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*/
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static int parse_key_value_squoted(char *buf, struct string_list *list)
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{
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while (*buf) {
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struct string_list_item *item;
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char *np;
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char *cp = strchr(buf, '=');
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if (!cp) {
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np = strchrnul(buf, '\n');
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return error(_("no key present in '%.*s'"),
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(int) (np - buf), buf);
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}
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np = strchrnul(cp, '\n');
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*cp++ = '\0';
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item = string_list_append(list, buf);
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buf = np + (*np == '\n');
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*np = '\0';
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cp = sq_dequote(cp);
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if (!cp)
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return error(_("unable to dequote value of '%s'"),
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item->string);
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item->util = xstrdup(cp);
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}
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return 0;
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}
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/**
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* Reads and parses the state directory's "author-script" file, and sets name,
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* email and date accordingly.
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* Returns 0 on success, -1 if the file could not be parsed.
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*
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* The author script is of the format:
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*
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* GIT_AUTHOR_NAME='$author_name'
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* GIT_AUTHOR_EMAIL='$author_email'
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* GIT_AUTHOR_DATE='$author_date'
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*
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* where $author_name, $author_email and $author_date are quoted. We are strict
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* with our parsing, as the file was meant to be eval'd in the old
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* git-am.sh/git-rebase--interactive.sh scripts, and thus if the file differs
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* from what this function expects, it is better to bail out than to do
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* something that the user does not expect.
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*/
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int read_author_script(const char *path, char **name, char **email, char **date,
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int allow_missing)
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{
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struct strbuf buf = STRBUF_INIT;
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struct string_list kv = STRING_LIST_INIT_DUP;
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int retval = -1; /* assume failure */
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int i, name_i = -2, email_i = -2, date_i = -2, err = 0;
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if (strbuf_read_file(&buf, path, 256) <= 0) {
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strbuf_release(&buf);
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if (errno == ENOENT && allow_missing)
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return 0;
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else
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return error_errno(_("could not open '%s' for reading"),
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path);
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}
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if (parse_key_value_squoted(buf.buf, &kv))
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goto finish;
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for (i = 0; i < kv.nr; i++) {
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if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) {
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if (name_i != -2)
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name_i = error(_("'GIT_AUTHOR_NAME' already given"));
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else
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name_i = i;
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} else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) {
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if (email_i != -2)
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email_i = error(_("'GIT_AUTHOR_EMAIL' already given"));
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else
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email_i = i;
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} else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) {
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if (date_i != -2)
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date_i = error(_("'GIT_AUTHOR_DATE' already given"));
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else
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date_i = i;
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} else {
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err = error(_("unknown variable '%s'"),
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kv.items[i].string);
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}
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}
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if (name_i == -2)
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error(_("missing 'GIT_AUTHOR_NAME'"));
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if (email_i == -2)
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error(_("missing 'GIT_AUTHOR_EMAIL'"));
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if (date_i == -2)
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error(_("missing 'GIT_AUTHOR_DATE'"));
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if (date_i < 0 || email_i < 0 || date_i < 0 || err)
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goto finish;
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*name = kv.items[name_i].util;
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*email = kv.items[email_i].util;
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*date = kv.items[date_i].util;
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retval = 0;
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finish:
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string_list_clear(&kv, !!retval);
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strbuf_release(&buf);
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return retval;
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}
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/*
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* write_author_script() used to fail to terminate the last line with a "'" and
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@ -114,4 +114,7 @@ void commit_post_rewrite(const struct commit *current_head,
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#define SUMMARY_SHOW_AUTHOR_DATE (1 << 1)
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void print_commit_summary(const char *prefix, const struct object_id *oid,
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unsigned int flags);
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int read_author_script(const char *path, char **name, char **email, char **date,
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int allow_missing);
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#endif
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