Release 4.7 tools/lib/subcmd/pager.c
#include <sys/select.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include "pager.h"
#include "run-command.h"
#include "sigchain.h"
#include "subcmd-config.h"
/*
* This is split up from the rest of git so that we can do
* something different on Windows.
*/
static int spawned_pager;
void pager_init(const char *pager_env)
{
subcmd_config.pager_env = pager_env;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| josh poimboeuf | josh poimboeuf | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static void pager_preexec(void)
{
/*
* Work around bug in "less" by not starting it until we
* have real input
*/
fd_set in;
FD_ZERO(&in);
FD_SET(0, &in);
select(1, &in, NULL, &in, NULL);
setenv("LESS", "FRSX", 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 50 | 100.00% | 1 | 100.00% |
| Total | 50 | 100.00% | 1 | 100.00% |
static const char *pager_argv[] = { "sh", "-c", NULL, NULL };
static struct child_process pager_process;
static void wait_for_pager(void)
{
fflush(stdout);
fflush(stderr);
/* signal EOF to pager */
close(1);
close(2);
finish_command(&pager_process);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
static void wait_for_pager_signal(int signo)
{
wait_for_pager();
sigchain_pop(signo);
raise(signo);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
void setup_pager(void)
{
const char *pager = getenv(subcmd_config.pager_env);
if (!isatty(1))
return;
if (!pager)
pager = getenv("PAGER");
if (!(pager || access("/usr/bin/pager", X_OK)))
pager = "/usr/bin/pager";
if (!(pager || access("/usr/bin/less", X_OK)))
pager = "/usr/bin/less";
if (!pager)
pager = "cat";
if (!*pager || !strcmp(pager, "cat"))
return;
spawned_pager = 1; /* means we are emitting to terminal */
/* spawn the pager */
pager_argv[2] = pager;
pager_process.argv = pager_argv;
pager_process.in = -1;
pager_process.preexec_cb = pager_preexec;
if (start_command(&pager_process))
return;
/* original process continues, but writes to the pipe */
dup2(pager_process.in, 1);
if (isatty(2))
dup2(pager_process.in, 2);
close(pager_process.in);
/* this makes sure that the parent terminates after the pager */
sigchain_push_common(wait_for_pager_signal);
atexit(wait_for_pager);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 145 | 78.38% | 1 | 25.00% |
| michael lentine | michael lentine | 20 | 10.81% | 1 | 25.00% |
| avik sil | avik sil | 17 | 9.19% | 1 | 25.00% |
| josh poimboeuf | josh poimboeuf | 3 | 1.62% | 1 | 25.00% |
| Total | 185 | 100.00% | 4 | 100.00% |
int pager_in_use(void)
{
return spawned_pager;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 9 | 90.00% | 1 | 50.00% |
| josh poimboeuf | josh poimboeuf | 1 | 10.00% | 1 | 50.00% |
| Total | 10 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ingo molnar | ingo molnar | 296 | 79.57% | 1 | 16.67% |
| josh poimboeuf | josh poimboeuf | 39 | 10.48% | 3 | 50.00% |
| michael lentine | michael lentine | 20 | 5.38% | 1 | 16.67% |
| avik sil | avik sil | 17 | 4.57% | 1 | 16.67% |
| Total | 372 | 100.00% | 6 | 100.00% |
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