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trailer: allow to write to files other than stdout 

Use fprintf instead of printf in trailer.c in order to allow printing
to a file other than stdout. This will be needed to support in-place
editing in git interpret-trailers.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Tobias Klauser 2016-01-14 17:57:54 +01:00 committed by Junio C Hamano
parent 754884255b
commit d0d2344ad8
1 changed files with 15 additions and 13 deletions
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28
trailer.c
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@ -108,23 +108,23 @@ 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 +795,15 @@ 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 +819,10 @@ 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++) {
@ -849,6 +850,7 @@ void process_trailers(const char *file, int trim_empty, struct string_list *trai
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);
@ -857,18 +859,18 @@ void process_trailers(const char *file, int trim_empty, struct string_list *trai
lines = read_input_file(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);
strbuf_list_free(lines);
}