mirror of
https://github.com/git/git.git
synced 2024-11-05 16:52:59 +01:00
8f309aeb82
The strbuf_getline() interface allows a byte other than LF or NUL as
the line terminator, but this is only because I wrote these
codepaths anticipating that there might be a value other than NUL
and LF that could be useful when I introduced line_termination long
time ago. No useful caller that uses other value has emerged.
By now, it is clear that the interface is overly broad without a
good reason. Many codepaths have hardcoded preference to read
either LF terminated or NUL terminated records from their input, and
then call strbuf_getline() with LF or NUL as the third parameter.
This step introduces two thin wrappers around strbuf_getline(),
namely, strbuf_getline_lf() and strbuf_getline_nul(), and
mechanically rewrites these call sites to call either one of
them. The changes contained in this patch are:
* introduction of these two functions in strbuf.[ch]
* mechanical conversion of all callers to strbuf_getline() with
either '\n' or '\0' as the third parameter to instead call the
respective thin wrapper.
After this step, output from "git grep 'strbuf_getline('" would
become a lot smaller. An interim goal of this series is to make
this an empty set, so that we can have strbuf_getline_crlf() take
over the shorter name strbuf_getline().
Signed-off-by: Junio C Hamano <gitster@pobox.com>
147 lines
2.5 KiB
C
147 lines
2.5 KiB
C
#include "git-compat-util.h"
|
|
#include "compat/terminal.h"
|
|
#include "sigchain.h"
|
|
#include "strbuf.h"
|
|
|
|
#if defined(HAVE_DEV_TTY) || defined(GIT_WINDOWS_NATIVE)
|
|
|
|
static void restore_term(void);
|
|
|
|
static void restore_term_on_signal(int sig)
|
|
{
|
|
restore_term();
|
|
sigchain_pop(sig);
|
|
raise(sig);
|
|
}
|
|
|
|
#ifdef HAVE_DEV_TTY
|
|
|
|
#define INPUT_PATH "/dev/tty"
|
|
#define OUTPUT_PATH "/dev/tty"
|
|
|
|
static int term_fd = -1;
|
|
static struct termios old_term;
|
|
|
|
static void restore_term(void)
|
|
{
|
|
if (term_fd < 0)
|
|
return;
|
|
|
|
tcsetattr(term_fd, TCSAFLUSH, &old_term);
|
|
close(term_fd);
|
|
term_fd = -1;
|
|
}
|
|
|
|
static int disable_echo(void)
|
|
{
|
|
struct termios t;
|
|
|
|
term_fd = open("/dev/tty", O_RDWR);
|
|
if (tcgetattr(term_fd, &t) < 0)
|
|
goto error;
|
|
|
|
old_term = t;
|
|
sigchain_push_common(restore_term_on_signal);
|
|
|
|
t.c_lflag &= ~ECHO;
|
|
if (!tcsetattr(term_fd, TCSAFLUSH, &t))
|
|
return 0;
|
|
|
|
error:
|
|
close(term_fd);
|
|
term_fd = -1;
|
|
return -1;
|
|
}
|
|
|
|
#elif defined(GIT_WINDOWS_NATIVE)
|
|
|
|
#define INPUT_PATH "CONIN$"
|
|
#define OUTPUT_PATH "CONOUT$"
|
|
#define FORCE_TEXT "t"
|
|
|
|
static HANDLE hconin = INVALID_HANDLE_VALUE;
|
|
static DWORD cmode;
|
|
|
|
static void restore_term(void)
|
|
{
|
|
if (hconin == INVALID_HANDLE_VALUE)
|
|
return;
|
|
|
|
SetConsoleMode(hconin, cmode);
|
|
CloseHandle(hconin);
|
|
hconin = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
static int disable_echo(void)
|
|
{
|
|
hconin = CreateFile("CONIN$", GENERIC_READ | GENERIC_WRITE,
|
|
FILE_SHARE_READ, NULL, OPEN_EXISTING,
|
|
FILE_ATTRIBUTE_NORMAL, NULL);
|
|
if (hconin == INVALID_HANDLE_VALUE)
|
|
return -1;
|
|
|
|
GetConsoleMode(hconin, &cmode);
|
|
sigchain_push_common(restore_term_on_signal);
|
|
if (!SetConsoleMode(hconin, cmode & (~ENABLE_ECHO_INPUT))) {
|
|
CloseHandle(hconin);
|
|
hconin = INVALID_HANDLE_VALUE;
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifndef FORCE_TEXT
|
|
#define FORCE_TEXT
|
|
#endif
|
|
|
|
char *git_terminal_prompt(const char *prompt, int echo)
|
|
{
|
|
static struct strbuf buf = STRBUF_INIT;
|
|
int r;
|
|
FILE *input_fh, *output_fh;
|
|
|
|
input_fh = fopen(INPUT_PATH, "r" FORCE_TEXT);
|
|
if (!input_fh)
|
|
return NULL;
|
|
|
|
output_fh = fopen(OUTPUT_PATH, "w" FORCE_TEXT);
|
|
if (!output_fh) {
|
|
fclose(input_fh);
|
|
return NULL;
|
|
}
|
|
|
|
if (!echo && disable_echo()) {
|
|
fclose(input_fh);
|
|
fclose(output_fh);
|
|
return NULL;
|
|
}
|
|
|
|
fputs(prompt, output_fh);
|
|
fflush(output_fh);
|
|
|
|
r = strbuf_getline_lf(&buf, input_fh);
|
|
if (!echo) {
|
|
putc('\n', output_fh);
|
|
fflush(output_fh);
|
|
}
|
|
|
|
restore_term();
|
|
fclose(input_fh);
|
|
fclose(output_fh);
|
|
|
|
if (r == EOF)
|
|
return NULL;
|
|
return buf.buf;
|
|
}
|
|
|
|
#else
|
|
|
|
char *git_terminal_prompt(const char *prompt, int echo)
|
|
{
|
|
return getpass(prompt);
|
|
}
|
|
|
|
#endif
|