diff options
Diffstat (limited to 'pager.c')
| -rw-r--r-- | pager.c | 64 |
1 files changed, 20 insertions, 44 deletions
@@ -1,4 +1,6 @@ #include "cache.h" +#include "run-command.h" +#include "sigchain.h" /* * This is split up from the rest of git so that we can do @@ -8,7 +10,7 @@ static int spawned_pager; #ifndef __MINGW32__ -static void run_pager(const char *pager) +static void pager_preexec(void) { /* * Work around bug in "less" by not starting it until we @@ -20,17 +22,13 @@ static void run_pager(const char *pager) FD_SET(0, &in); select(1, &in, NULL, &in, NULL); - execlp(pager, pager, NULL); - execl("/bin/sh", "sh", "-c", pager, NULL); + setenv("LESS", "FRSX", 0); } -#else -#include "run-command.h" +#endif static const char *pager_argv[] = { "sh", "-c", NULL, NULL }; -static struct child_process pager_process = { - .argv = pager_argv, - .in = -1 -}; +static struct child_process pager_process; + static void wait_for_pager(void) { fflush(stdout); @@ -40,14 +38,16 @@ static void wait_for_pager(void) close(2); finish_command(&pager_process); } -#endif + +static void wait_for_pager_signal(int signo) +{ + wait_for_pager(); + sigchain_pop(signo); + raise(signo); +} void setup_pager(void) { -#ifndef __MINGW32__ - pid_t pid; - int fd[2]; -#endif const char *pager = getenv("GIT_PAGER"); if (!isatty(1)) @@ -66,37 +66,13 @@ void setup_pager(void) spawned_pager = 1; /* means we are emitting to terminal */ -#ifndef __MINGW32__ - if (pipe(fd) < 0) - return; - pid = fork(); - if (pid < 0) { - close(fd[0]); - close(fd[1]); - return; - } - - /* return in the child */ - if (!pid) { - dup2(fd[1], 1); - dup2(fd[1], 2); - close(fd[0]); - close(fd[1]); - return; - } - - /* The original process turns into the PAGER */ - dup2(fd[0], 0); - close(fd[0]); - close(fd[1]); - - setenv("LESS", "FRSX", 0); - run_pager(pager); - die("unable to execute pager '%s'", pager); - exit(255); -#else /* spawn the pager */ pager_argv[2] = pager; + pager_process.argv = pager_argv; + pager_process.in = -1; +#ifndef __MINGW32__ + pager_process.preexec_cb = pager_preexec; +#endif if (start_command(&pager_process)) return; @@ -107,8 +83,8 @@ void setup_pager(void) 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); -#endif } int pager_in_use(void) |