From: Phillip Wood <phillip.wood@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
---
Notes:
changes since v1:
- added comment above read_author_script()
- rebased to reflect changes added in patch 2
builtin/am.c | 86 +----------------------------------------
sequencer.c | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++
sequencer.h | 3 ++
3 files changed, 110 insertions(+), 84 deletions(-)
diff --git a/builtin/am.c b/builtin/am.c
index 991d13f9a2..c5373158c0 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -260,36 +260,6 @@ static int read_state_file(struct strbuf *sb, const struct am_state *state,
die_errno(_("could not read '%s'"), am_path(state, file));
}
-/**
- * Take a series of KEY='VALUE' lines where VALUE part is
- * sq-quoted, and append <KEY, VALUE> at the end of the string list
- */
-static int parse_key_value_squoted(char *buf, struct string_list *list)
-{
- while (*buf) {
- struct string_list_item *item;
- char *np;
- char *cp = strchr(buf, '=');
- if (!cp) {
- np = strchrnul(buf, '\n');
- return error(_("unable to parse '%.*s'"),
- (int) (np - buf), buf);
- }
- np = strchrnul(cp, '\n');
- *cp++ = '\0';
- item = string_list_append(list, buf);
-
- buf = np + (*np == '\n');
- *np = '\0';
- cp = sq_dequote(cp);
- if (!cp)
- return error(_("unable to dequote value of '%s'"),
- item->string);
- item->util = xstrdup(cp);
- }
- return 0;
-}
-
/**
* Reads and parses the state directory's "author-script" file, and sets
* state->author_name, state->author_email and state->author_date accordingly.
@@ -309,65 +279,13 @@ static int parse_key_value_squoted(char *buf, struct string_list *list)
static int read_am_author_script(struct am_state *state)
{
const char *filename = am_path(state, "author-script");
- struct strbuf buf = STRBUF_INIT;
- struct string_list kv = STRING_LIST_INIT_DUP;
- int retval = -1; /* assume failure */
- int i, name_i = -2, email_i = -2, date_i = -2, err = 0;
- int fd;
assert(!state->author_name);
assert(!state->author_email);
assert(!state->author_date);
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- if (errno == ENOENT)
- return 0;
- return error_errno(_("could not open '%s' for reading"),
- filename);
- }
- strbuf_read(&buf, fd, 0);
- close(fd);
- if (parse_key_value_squoted(buf.buf, &kv))
- goto finish;
-
- for (i = 0; i < kv.nr; i++) {
- if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) {
- if (name_i >= 0)
- name_i = error(_("'GIT_AUTHOR_NAME' already given"));
- else
- name_i = i;
- } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) {
- if (email_i >= 0)
- email_i = error(_("'GIT_AUTHOR_EMAIL' already given"));
- else
- email_i = i;
- } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) {
- if (date_i >= 0)
- date_i = error(_("'GIT_AUTHOR_DATE' already given"));
- else
- date_i = i;
- } else {
- err = error(_("unknown variable '%s'"),
- kv.items[i].string);
- }
- }
- if (name_i == -2)
- error(_("missing 'GIT_AUTHOR_NAME'"));
- if (email_i == -2)
- error(_("missing 'GIT_AUTHOR_EMAIL'"));
- if (date_i == -2)
- error(_("missing 'GIT_AUTHOR_DATE'"));
- if (date_i < 0 || email_i < 0 || date_i < 0 || err)
- goto finish;
- state->author_name = kv.items[name_i].util;
- state->author_email = kv.items[email_i].util;
- state->author_date = kv.items[date_i].util;
- retval = 0;
-finish:
- string_list_clear(&kv, !!retval);
- strbuf_release(&buf);
- return retval;
+ return read_author_script(filename, &state->author_name,
+ &state->author_email, &state->author_date, 1);
}
/**
diff --git a/sequencer.c b/sequencer.c
index dc2c58d464..3530dbeb6c 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -660,6 +660,111 @@ static int write_author_script(const char *message)
return res;
}
+/**
+ * Take a series of KEY='VALUE' lines where VALUE part is
+ * sq-quoted, and append <KEY, VALUE> at the end of the string list
+ */
+static int parse_key_value_squoted(char *buf, struct string_list *list)
+{
+ while (*buf) {
+ struct string_list_item *item;
+ char *np;
+ char *cp = strchr(buf, '=');
+ if (!cp) {
+ np = strchrnul(buf, '\n');
+ return error(_("unable to parse '%.*s'"),
+ (int) (np - buf), buf);
+ }
+ np = strchrnul(cp, '\n');
+ *cp++ = '\0';
+ item = string_list_append(list, buf);
+
+ buf = np + (*np == '\n');
+ *np = '\0';
+ cp = sq_dequote(cp);
+ if (!cp)
+ return error(_("unable to dequote value of '%s'"),
+ item->string);
+ item->util = xstrdup(cp);
+ }
+ return 0;
+}
+
+/**
+ * Reads and parses the state directory's "author-script" file, and sets name,
+ * email and date accordingly.
+ * Returns 0 on success, -1 if the file could not be parsed.
+ *
+ * The author script is of the format:
+ *
+ * GIT_AUTHOR_NAME='$author_name'
+ * GIT_AUTHOR_EMAIL='$author_email'
+ * GIT_AUTHOR_DATE='$author_date'
+ *
+ * where $author_name, $author_email and $author_date are quoted. We are strict
+ * with our parsing, as the file was meant to be eval'd in the old
+ * git-am.sh/git-rebase--interactive.sh scripts, and thus if the file differs
+ * from what this function expects, it is better to bail out than to do
+ * something that the user does not expect.
+ */
+int read_author_script(const char *path, char **name, char **email, char **date,
+ int allow_missing)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct string_list kv = STRING_LIST_INIT_DUP;
+ int retval = -1; /* assume failure */
+ int i, name_i = -2, email_i = -2, date_i = -2, err = 0;
+
+ if (strbuf_read_file(&buf, path, 256) <= 0) {
+ strbuf_release(&buf);
+ if (errno == ENOENT && allow_missing)
+ return 0;
+ else
+ return error_errno(_("could not open '%s' for reading"),
+ path);
+ }
+
+ if (parse_key_value_squoted(buf.buf, &kv))
+ goto finish;
+
+ for (i = 0; i < kv.nr; i++) {
+ if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) {
+ if (name_i >= 0)
+ name_i = error(_("'GIT_AUTHOR_NAME' already given"));
+ else
+ name_i = i;
+ } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) {
+ if (email_i >= 0)
+ email_i = error(_("'GIT_AUTHOR_EMAIL' already given"));
+ else
+ email_i = i;
+ } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) {
+ if (date_i >= 0)
+ date_i = error(_("'GIT_AUTHOR_DATE' already given"));
+ else
+ date_i = i;
+ } else {
+ err = error(_("unknown variable '%s'"),
+ kv.items[i].string);
+ }
+ }
+ if (name_i == -2)
+ error(_("missing 'GIT_AUTHOR_NAME'"));
+ if (email_i == -2)
+ error(_("missing 'GIT_AUTHOR_EMAIL'"));
+ if (date_i == -2)
+ error(_("missing 'GIT_AUTHOR_DATE'"));
+ if (date_i < 0 || email_i < 0 || date_i < 0 || err)
+ goto finish;
+ *name = kv.items[name_i].util;
+ *email = kv.items[email_i].util;
+ *date = kv.items[date_i].util;
+ retval = 0;
+finish:
+ string_list_clear(&kv, !!retval);
+ strbuf_release(&buf);
+ return retval;
+}
/*
* write_author_script() used to fail to terminate the last line with a "'" and
diff --git a/sequencer.h b/sequencer.h
index c751c9d6e4..3713f955f5 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -107,4 +107,7 @@ void commit_post_rewrite(const struct commit *current_head,
#define SUMMARY_SHOW_AUTHOR_DATE (1 << 1)
void print_commit_summary(const char *prefix, const struct object_id *oid,
unsigned int flags);
+
+int read_author_script(const char *path, char **name, char **email, char **date,
+ int allow_missing);
#endif
--
2.19.1
