projects / thirdparty / git.git / blame
| Commit | Line | Data |
|---|---|---|
| f67b45f8 LT |
1 | #include "cache.h" |
| 2 | ||
| 3 | /* | |
| 4 | * This is split up from the rest of git so that we might do | |
| 5 | * something different on Windows, for example. | |
| 6 | */ | |
| 7 | ||
| 402461aa | 8 | static void run_pager(const char *pager) |
| f67b45f8 | 9 | { |
| 402461aa | 10 | execlp(pager, pager, NULL); |
| f67b45f8 LT |
11 | } |
| 12 | ||
| 13 | void setup_pager(void) | |
| 14 | { | |
| 15 | pid_t pid; | |
| 16 | int fd[2]; | |
| 402461aa | 17 | const char *pager = getenv("PAGER"); |
| f67b45f8 LT |
18 | |
| 19 | if (!isatty(1)) | |
| 20 | return; | |
| 402461aa JS |
21 | if (!pager) |
| 22 | pager = "less"; | |
| 23 | else if (!*pager) | |
| 24 | return; | |
| 25 | ||
| f67b45f8 LT |
26 | if (pipe(fd) < 0) |
| 27 | return; | |
| 28 | pid = fork(); | |
| 29 | if (pid < 0) { | |
| 30 | close(fd[0]); | |
| 31 | close(fd[1]); | |
| 32 | return; | |
| 33 | } | |
| 34 | ||
| 35 | /* return in the child */ | |
| 36 | if (!pid) { | |
| 37 | dup2(fd[1], 1); | |
| 38 | close(fd[0]); | |
| 39 | close(fd[1]); | |
| 40 | return; | |
| 41 | } | |
| 42 | ||
| 43 | /* The original process turns into the PAGER */ | |
| 44 | dup2(fd[0], 0); | |
| 45 | close(fd[0]); | |
| 46 | close(fd[1]); | |
| 47 | ||
| 402461aa JS |
48 | setenv("LESS", "-S", 0); |
| 49 | run_pager(pager); | |
| f67b45f8 LT |
50 | exit(255); |
| 51 | } |