#include "cache.h"
+#include "config.h"
#include "string-list.h"
#include "run-command.h"
#include "commit.h"
* Copyright (c) 2013, 2014 Christian Couder <chriscool@tuxfamily.org>
*/
-enum action_where { WHERE_END, WHERE_AFTER, WHERE_BEFORE, WHERE_START };
-enum action_if_exists { EXISTS_ADD_IF_DIFFERENT_NEIGHBOR, EXISTS_ADD_IF_DIFFERENT,
- EXISTS_ADD, EXISTS_REPLACE, EXISTS_DO_NOTHING };
-enum action_if_missing { MISSING_ADD, MISSING_DO_NOTHING };
-
struct conf_info {
char *name;
char *key;
char *command;
- enum action_where where;
- enum action_if_exists if_exists;
- enum action_if_missing if_missing;
+ enum trailer_where where;
+ enum trailer_if_exists if_exists;
+ enum trailer_if_missing if_missing;
};
static struct conf_info default_conf_info;
static char *separators = ":";
+static int configured;
+
#define TRAILER_ARG_STRING "$ARG"
static const char *git_generated_prefixes[] = {
pos != (head); \
pos = is_reverse ? pos->prev : pos->next)
-static int after_or_end(enum action_where where)
+static int after_or_end(enum trailer_where where)
{
return (where == WHERE_AFTER) || (where == WHERE_END);
}
fprintf(outfile, "%s%c %s\n", tok, separators[0], val);
}
-static void print_all(FILE *outfile, struct list_head *head, int trim_empty)
+static void print_all(FILE *outfile, struct list_head *head,
+ const struct process_trailer_options *opts)
{
struct list_head *pos;
struct trailer_item *item;
list_for_each(pos, head) {
item = list_entry(pos, struct trailer_item, list);
- if (!trim_empty || strlen(item->value) > 0)
+ if ((!opts->trim_empty || strlen(item->value) > 0) &&
+ (!opts->only_trailers || item->token))
print_tok_val(outfile, item->token, item->value);
}
}
int check_all,
struct list_head *head)
{
- enum action_where where = arg_tok->conf.where;
+ enum trailer_where where = arg_tok->conf.where;
struct list_head *next_head;
do {
if (same_trailer(in_tok, arg_tok))
else
free_arg_item(arg_tok);
break;
+ default:
+ die("BUG: trailer.c: unhandled value %d",
+ arg_tok->conf.if_exists);
}
}
static void apply_arg_if_missing(struct list_head *head,
struct arg_item *arg_tok)
{
- enum action_where where;
+ enum trailer_where where;
struct trailer_item *to_add;
switch (arg_tok->conf.if_missing) {
list_add_tail(&to_add->list, head);
else
list_add(&to_add->list, head);
+ break;
+ default:
+ die("BUG: trailer.c: unhandled value %d",
+ arg_tok->conf.if_missing);
}
}
struct trailer_item *in_tok;
struct trailer_item *on_tok;
- enum action_where where = arg_tok->conf.where;
+ enum trailer_where where = arg_tok->conf.where;
int middle = (where == WHERE_AFTER) || (where == WHERE_BEFORE);
int backwards = after_or_end(where);
struct trailer_item *start_tok;
}
}
-static int set_where(struct conf_info *item, const char *value)
+int trailer_set_where(enum trailer_where *item, const char *value)
{
- if (!strcasecmp("after", value))
- item->where = WHERE_AFTER;
+ if (!value)
+ *item = WHERE_DEFAULT;
+ else if (!strcasecmp("after", value))
+ *item = WHERE_AFTER;
else if (!strcasecmp("before", value))
- item->where = WHERE_BEFORE;
+ *item = WHERE_BEFORE;
else if (!strcasecmp("end", value))
- item->where = WHERE_END;
+ *item = WHERE_END;
else if (!strcasecmp("start", value))
- item->where = WHERE_START;
+ *item = WHERE_START;
else
return -1;
return 0;
}
-static int set_if_exists(struct conf_info *item, const char *value)
+int trailer_set_if_exists(enum trailer_if_exists *item, const char *value)
{
- if (!strcasecmp("addIfDifferent", value))
- item->if_exists = EXISTS_ADD_IF_DIFFERENT;
+ if (!value)
+ *item = EXISTS_DEFAULT;
+ else if (!strcasecmp("addIfDifferent", value))
+ *item = EXISTS_ADD_IF_DIFFERENT;
else if (!strcasecmp("addIfDifferentNeighbor", value))
- item->if_exists = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR;
+ *item = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR;
else if (!strcasecmp("add", value))
- item->if_exists = EXISTS_ADD;
+ *item = EXISTS_ADD;
else if (!strcasecmp("replace", value))
- item->if_exists = EXISTS_REPLACE;
+ *item = EXISTS_REPLACE;
else if (!strcasecmp("doNothing", value))
- item->if_exists = EXISTS_DO_NOTHING;
+ *item = EXISTS_DO_NOTHING;
else
return -1;
return 0;
}
-static int set_if_missing(struct conf_info *item, const char *value)
+int trailer_set_if_missing(enum trailer_if_missing *item, const char *value)
{
- if (!strcasecmp("doNothing", value))
- item->if_missing = MISSING_DO_NOTHING;
+ if (!value)
+ *item = MISSING_DEFAULT;
+ else if (!strcasecmp("doNothing", value))
+ *item = MISSING_DO_NOTHING;
else if (!strcasecmp("add", value))
- item->if_missing = MISSING_ADD;
+ *item = MISSING_ADD;
else
return -1;
return 0;
variable_name = strrchr(trailer_item, '.');
if (!variable_name) {
if (!strcmp(trailer_item, "where")) {
- if (set_where(&default_conf_info, value) < 0)
+ if (trailer_set_where(&default_conf_info.where,
+ value) < 0)
warning(_("unknown value '%s' for key '%s'"),
value, conf_key);
} else if (!strcmp(trailer_item, "ifexists")) {
- if (set_if_exists(&default_conf_info, value) < 0)
+ if (trailer_set_if_exists(&default_conf_info.if_exists,
+ value) < 0)
warning(_("unknown value '%s' for key '%s'"),
value, conf_key);
} else if (!strcmp(trailer_item, "ifmissing")) {
- if (set_if_missing(&default_conf_info, value) < 0)
+ if (trailer_set_if_missing(&default_conf_info.if_missing,
+ value) < 0)
warning(_("unknown value '%s' for key '%s'"),
value, conf_key);
} else if (!strcmp(trailer_item, "separators")) {
conf->command = xstrdup(value);
break;
case TRAILER_WHERE:
- if (set_where(conf, value))
+ if (trailer_set_where(&conf->where, value))
warning(_("unknown value '%s' for key '%s'"), value, conf_key);
break;
case TRAILER_IF_EXISTS:
- if (set_if_exists(conf, value))
+ if (trailer_set_if_exists(&conf->if_exists, value))
warning(_("unknown value '%s' for key '%s'"), value, conf_key);
break;
case TRAILER_IF_MISSING:
- if (set_if_missing(conf, value))
+ if (trailer_set_if_missing(&conf->if_missing, value))
warning(_("unknown value '%s' for key '%s'"), value, conf_key);
break;
default:
return 0;
}
+static void ensure_configured(void)
+{
+ if (configured)
+ return;
+
+ /* Default config must be setup first */
+ default_conf_info.where = WHERE_END;
+ default_conf_info.if_exists = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR;
+ default_conf_info.if_missing = MISSING_ADD;
+ git_config(git_trailer_default_config, NULL);
+ git_config(git_trailer_config, NULL);
+ configured = 1;
+}
+
static const char *token_from_item(struct arg_item *item, char *tok)
{
if (item->conf.key)
}
static void add_arg_item(struct list_head *arg_head, char *tok, char *val,
- const struct conf_info *conf)
+ const struct conf_info *conf,
+ const struct new_trailer_item *new_trailer_item)
{
struct arg_item *new = xcalloc(sizeof(*new), 1);
new->token = tok;
new->value = val;
duplicate_conf(&new->conf, conf);
+ if (new_trailer_item) {
+ if (new_trailer_item->where != WHERE_DEFAULT)
+ new->conf.where = new_trailer_item->where;
+ if (new_trailer_item->if_exists != EXISTS_DEFAULT)
+ new->conf.if_exists = new_trailer_item->if_exists;
+ if (new_trailer_item->if_missing != MISSING_DEFAULT)
+ new->conf.if_missing = new_trailer_item->if_missing;
+ }
list_add_tail(&new->list, arg_head);
}
static void process_command_line_args(struct list_head *arg_head,
- struct string_list *trailers)
+ struct list_head *new_trailer_head)
{
- struct string_list_item *tr;
struct arg_item *item;
struct strbuf tok = STRBUF_INIT;
struct strbuf val = STRBUF_INIT;
add_arg_item(arg_head,
xstrdup(token_from_item(item, NULL)),
xstrdup(""),
- &item->conf);
+ &item->conf, NULL);
}
/* Add an arg item for each trailer on the command line */
- for_each_string_list_item(tr, trailers) {
- int separator_pos = find_separator(tr->string, cl_separators);
+ list_for_each(pos, new_trailer_head) {
+ struct new_trailer_item *tr =
+ list_entry(pos, struct new_trailer_item, list);
+ int separator_pos = find_separator(tr->text, cl_separators);
+
if (separator_pos == 0) {
struct strbuf sb = STRBUF_INIT;
- strbuf_addstr(&sb, tr->string);
+ strbuf_addstr(&sb, tr->text);
strbuf_trim(&sb);
error(_("empty trailer token in trailer '%.*s'"),
(int) sb.len, sb.buf);
strbuf_release(&sb);
} else {
- parse_trailer(&tok, &val, &conf, tr->string,
+ parse_trailer(&tok, &val, &conf, tr->text,
separator_pos);
add_arg_item(arg_head,
strbuf_detach(&tok, NULL),
strbuf_detach(&val, NULL),
- conf);
+ conf, tr);
}
}
return is_blank_line(buf + ll);
}
+static void unfold_value(struct strbuf *val)
+{
+ struct strbuf out = STRBUF_INIT;
+ size_t i;
+
+ strbuf_grow(&out, val->len);
+ i = 0;
+ while (i < val->len) {
+ char c = val->buf[i++];
+ if (c == '\n') {
+ /* Collapse continuation down to a single space. */
+ while (i < val->len && isspace(val->buf[i]))
+ i++;
+ strbuf_addch(&out, ' ');
+ } else {
+ strbuf_addch(&out, c);
+ }
+ }
+
+ /* Empty lines may have left us with whitespace cruft at the edges */
+ strbuf_trim(&out);
+
+ /* output goes back to val as if we modified it in-place */
+ strbuf_swap(&out, val);
+ strbuf_release(&out);
+}
+
static int process_input_file(FILE *outfile,
const char *str,
- struct list_head *head)
+ struct list_head *head,
+ const struct process_trailer_options *opts)
{
- int patch_start, trailer_start, trailer_end;
+ struct trailer_info info;
struct strbuf tok = STRBUF_INIT;
struct strbuf val = STRBUF_INIT;
- struct trailer_item *last = NULL;
- struct strbuf *trailer, **trailer_lines, **ptr;
+ int i;
- patch_start = find_patch_start(str);
- trailer_end = find_trailer_end(str, patch_start);
- trailer_start = find_trailer_start(str, trailer_end);
+ trailer_info_get(&info, str);
/* Print lines before the trailers as is */
- fwrite(str, 1, trailer_start, outfile);
+ if (!opts->only_trailers)
+ fwrite(str, 1, info.trailer_start - str, outfile);
- if (!ends_with_blank_line(str, trailer_start))
+ if (!opts->only_trailers && !info.blank_line_before_trailer)
fprintf(outfile, "\n");
- /* Parse trailer lines */
- trailer_lines = strbuf_split_buf(str + trailer_start,
- trailer_end - trailer_start,
- '\n',
- 0);
- for (ptr = trailer_lines; *ptr; ptr++) {
+ for (i = 0; i < info.trailer_nr; i++) {
int separator_pos;
- trailer = *ptr;
- if (trailer->buf[0] == comment_line_char)
+ char *trailer = info.trailers[i];
+ if (trailer[0] == comment_line_char)
continue;
- if (last && isspace(trailer->buf[0])) {
- struct strbuf sb = STRBUF_INIT;
- strbuf_addf(&sb, "%s\n%s", last->value, trailer->buf);
- strbuf_strip_suffix(&sb, "\n");
- free(last->value);
- last->value = strbuf_detach(&sb, NULL);
- continue;
- }
- separator_pos = find_separator(trailer->buf, separators);
+ separator_pos = find_separator(trailer, separators);
if (separator_pos >= 1) {
- parse_trailer(&tok, &val, NULL, trailer->buf,
+ parse_trailer(&tok, &val, NULL, trailer,
separator_pos);
- last = add_trailer_item(head,
- strbuf_detach(&tok, NULL),
- strbuf_detach(&val, NULL));
- } else {
- strbuf_addbuf(&val, trailer);
+ if (opts->unfold)
+ unfold_value(&val);
+ add_trailer_item(head,
+ strbuf_detach(&tok, NULL),
+ strbuf_detach(&val, NULL));
+ } else if (!opts->only_trailers) {
+ strbuf_addstr(&val, trailer);
strbuf_strip_suffix(&val, "\n");
add_trailer_item(head,
NULL,
strbuf_detach(&val, NULL));
- last = NULL;
}
}
- strbuf_list_free(trailer_lines);
- return trailer_end;
+ trailer_info_release(&info);
+
+ return info.trailer_end - str;
}
static void free_all(struct list_head *head)
}
}
-static struct tempfile trailers_tempfile;
+static struct tempfile *trailers_tempfile;
static FILE *create_in_place_tempfile(const char *file)
{
strbuf_add(&template, file, tail - file + 1);
strbuf_addstr(&template, "git-interpret-trailers-XXXXXX");
- xmks_tempfile_m(&trailers_tempfile, template.buf, st.st_mode);
+ trailers_tempfile = xmks_tempfile_m(template.buf, st.st_mode);
strbuf_release(&template);
- outfile = fdopen_tempfile(&trailers_tempfile, "w");
+ outfile = fdopen_tempfile(trailers_tempfile, "w");
if (!outfile)
die_errno(_("could not open temporary file"));
return outfile;
}
-void process_trailers(const char *file, int in_place, int trim_empty, struct string_list *trailers)
+void process_trailers(const char *file,
+ const struct process_trailer_options *opts,
+ struct list_head *new_trailer_head)
{
LIST_HEAD(head);
- LIST_HEAD(arg_head);
struct strbuf sb = STRBUF_INIT;
int trailer_end;
FILE *outfile = stdout;
- /* Default config must be setup first */
- git_config(git_trailer_default_config, NULL);
- git_config(git_trailer_config, NULL);
+ ensure_configured();
read_input_file(&sb, file);
- if (in_place)
+ if (opts->in_place)
outfile = create_in_place_tempfile(file);
/* Print the lines before the trailers */
- trailer_end = process_input_file(outfile, sb.buf, &head);
-
- process_command_line_args(&arg_head, trailers);
+ trailer_end = process_input_file(outfile, sb.buf, &head, opts);
- process_trailers_lists(&head, &arg_head);
+ if (!opts->only_input) {
+ LIST_HEAD(arg_head);
+ process_command_line_args(&arg_head, new_trailer_head);
+ process_trailers_lists(&head, &arg_head);
+ }
- print_all(outfile, &head, trim_empty);
+ print_all(outfile, &head, opts);
free_all(&head);
/* Print the lines after the trailers as is */
- fwrite(sb.buf + trailer_end, 1, sb.len - trailer_end, outfile);
+ if (!opts->only_trailers)
+ fwrite(sb.buf + trailer_end, 1, sb.len - trailer_end, outfile);
- if (in_place)
+ if (opts->in_place)
if (rename_tempfile(&trailers_tempfile, file))
die_errno(_("could not rename temporary file to %s"), file);
strbuf_release(&sb);
}
+
+void trailer_info_get(struct trailer_info *info, const char *str)
+{
+ int patch_start, trailer_end, trailer_start;
+ struct strbuf **trailer_lines, **ptr;
+ char **trailer_strings = NULL;
+ size_t nr = 0, alloc = 0;
+ char **last = NULL;
+
+ ensure_configured();
+
+ patch_start = find_patch_start(str);
+ trailer_end = find_trailer_end(str, patch_start);
+ trailer_start = find_trailer_start(str, trailer_end);
+
+ trailer_lines = strbuf_split_buf(str + trailer_start,
+ trailer_end - trailer_start,
+ '\n',
+ 0);
+ for (ptr = trailer_lines; *ptr; ptr++) {
+ if (last && isspace((*ptr)->buf[0])) {
+ struct strbuf sb = STRBUF_INIT;
+ strbuf_attach(&sb, *last, strlen(*last), strlen(*last));
+ strbuf_addbuf(&sb, *ptr);
+ *last = strbuf_detach(&sb, NULL);
+ continue;
+ }
+ ALLOC_GROW(trailer_strings, nr + 1, alloc);
+ trailer_strings[nr] = strbuf_detach(*ptr, NULL);
+ last = find_separator(trailer_strings[nr], separators) >= 1
+ ? &trailer_strings[nr]
+ : NULL;
+ nr++;
+ }
+ strbuf_list_free(trailer_lines);
+
+ info->blank_line_before_trailer = ends_with_blank_line(str,
+ trailer_start);
+ info->trailer_start = str + trailer_start;
+ info->trailer_end = str + trailer_end;
+ info->trailers = trailer_strings;
+ info->trailer_nr = nr;
+}
+
+void trailer_info_release(struct trailer_info *info)
+{
+ int i;
+ for (i = 0; i < info->trailer_nr; i++)
+ free(info->trailers[i]);
+ free(info->trailers);
+}
+
+static void format_trailer_info(struct strbuf *out,
+ const struct trailer_info *info,
+ const struct process_trailer_options *opts)
+{
+ int i;
+
+ /* If we want the whole block untouched, we can take the fast path. */
+ if (!opts->only_trailers && !opts->unfold) {
+ strbuf_add(out, info->trailer_start,
+ info->trailer_end - info->trailer_start);
+ return;
+ }
+
+ for (i = 0; i < info->trailer_nr; i++) {
+ char *trailer = info->trailers[i];
+ int separator_pos = find_separator(trailer, separators);
+
+ if (separator_pos >= 1) {
+ struct strbuf tok = STRBUF_INIT;
+ struct strbuf val = STRBUF_INIT;
+
+ parse_trailer(&tok, &val, NULL, trailer, separator_pos);
+ if (opts->unfold)
+ unfold_value(&val);
+
+ strbuf_addf(out, "%s: %s\n", tok.buf, val.buf);
+ strbuf_release(&tok);
+ strbuf_release(&val);
+
+ } else if (!opts->only_trailers) {
+ strbuf_addstr(out, trailer);
+ }
+ }
+
+}
+
+void format_trailers_from_commit(struct strbuf *out, const char *msg,
+ const struct process_trailer_options *opts)
+{
+ struct trailer_info info;
+
+ trailer_info_get(&info, msg);
+ format_trailer_info(out, &info, opts);
+ trailer_info_release(&info);
+}