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-rw-r--r--trailer.c69
1 files changed, 55 insertions, 14 deletions
diff --git a/trailer.c b/trailer.c
index 6f3416feba..94b387b499 100644
--- a/trailer.c
+++ b/trailer.c
@@ -2,6 +2,7 @@
#include "string-list.h"
#include "run-command.h"
#include "commit.h"
+#include "tempfile.h"
#include "trailer.h"
/*
* Copyright (c) 2013, 2014 Christian Couder <chriscool@tuxfamily.org>
@@ -108,23 +109,23 @@ static char last_non_space_char(const char *s)
return '\0';
}
-static void print_tok_val(const char *tok, const char *val)
+static void print_tok_val(FILE *outfile, const char *tok, const char *val)
{
char c = last_non_space_char(tok);
if (!c)
return;
if (strchr(separators, c))
- printf("%s%s\n", tok, val);
+ fprintf(outfile, "%s%s\n", tok, val);
else
- printf("%s%c %s\n", tok, separators[0], val);
+ fprintf(outfile, "%s%c %s\n", tok, separators[0], val);
}
-static void print_all(struct trailer_item *first, int trim_empty)
+static void print_all(FILE *outfile, struct trailer_item *first, int trim_empty)
{
struct trailer_item *item;
for (item = first; item; item = item->next) {
if (!trim_empty || strlen(item->value) > 0)
- print_tok_val(item->token, item->value);
+ print_tok_val(outfile, item->token, item->value);
}
}
@@ -795,14 +796,15 @@ static int has_blank_line_before(struct strbuf **lines, int start)
return 0;
}
-static void print_lines(struct strbuf **lines, int start, int end)
+static void print_lines(FILE *outfile, struct strbuf **lines, int start, int end)
{
int i;
for (i = start; lines[i] && i < end; i++)
- printf("%s", lines[i]->buf);
+ fprintf(outfile, "%s", lines[i]->buf);
}
-static int process_input_file(struct strbuf **lines,
+static int process_input_file(FILE *outfile,
+ struct strbuf **lines,
struct trailer_item **in_tok_first,
struct trailer_item **in_tok_last)
{
@@ -818,10 +820,10 @@ static int process_input_file(struct strbuf **lines,
trailer_start = find_trailer_start(lines, trailer_end);
/* Print lines before the trailers as is */
- print_lines(lines, 0, trailer_start);
+ print_lines(outfile, lines, 0, trailer_start);
if (!has_blank_line_before(lines, trailer_start - 1))
- printf("\n");
+ fprintf(outfile, "\n");
/* Parse trailer lines */
for (i = trailer_start; i < trailer_end; i++) {
@@ -842,13 +844,45 @@ static void free_all(struct trailer_item **first)
}
}
-void process_trailers(const char *file, int trim_empty, struct string_list *trailers)
+static struct tempfile trailers_tempfile;
+
+static FILE *create_in_place_tempfile(const char *file)
+{
+ struct stat st;
+ struct strbuf template = STRBUF_INIT;
+ const char *tail;
+ FILE *outfile;
+
+ if (stat(file, &st))
+ die_errno(_("could not stat %s"), file);
+ if (!S_ISREG(st.st_mode))
+ die(_("file %s is not a regular file"), file);
+ if (!(st.st_mode & S_IWUSR))
+ die(_("file %s is not writable by user"), file);
+
+ /* Create temporary file in the same directory as the original */
+ tail = strrchr(file, '/');
+ if (tail != NULL)
+ strbuf_add(&template, file, tail - file + 1);
+ strbuf_addstr(&template, "git-interpret-trailers-XXXXXX");
+
+ xmks_tempfile_m(&trailers_tempfile, template.buf, st.st_mode);
+ strbuf_release(&template);
+ 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)
{
struct trailer_item *in_tok_first = NULL;
struct trailer_item *in_tok_last = NULL;
struct trailer_item *arg_tok_first;
struct strbuf **lines;
int trailer_end;
+ FILE *outfile = stdout;
/* Default config must be setup first */
git_config(git_trailer_default_config, NULL);
@@ -856,19 +890,26 @@ void process_trailers(const char *file, int trim_empty, struct string_list *trai
lines = read_input_file(file);
+ if (in_place)
+ outfile = create_in_place_tempfile(file);
+
/* Print the lines before the trailers */
- trailer_end = process_input_file(lines, &in_tok_first, &in_tok_last);
+ trailer_end = process_input_file(outfile, lines, &in_tok_first, &in_tok_last);
arg_tok_first = process_command_line_args(trailers);
process_trailers_lists(&in_tok_first, &in_tok_last, &arg_tok_first);
- print_all(in_tok_first, trim_empty);
+ print_all(outfile, in_tok_first, trim_empty);
free_all(&in_tok_first);
/* Print the lines after the trailers as is */
- print_lines(lines, trailer_end, INT_MAX);
+ print_lines(outfile, lines, trailer_end, INT_MAX);
+
+ if (in_place)
+ if (rename_tempfile(&trailers_tempfile, file))
+ die_errno(_("could not rename temporary file to %s"), file);
strbuf_list_free(lines);
}