48 lines
701 B
48 lines
701 B
#include "cache.h" |
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/* |
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* This is split up from the rest of git so that we might do |
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* something different on Windows, for example. |
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*/ |
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static void run_pager(void) |
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{ |
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const char *prog = getenv("PAGER"); |
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if (!prog) |
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prog = "less"; |
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setenv("LESS", "-S", 0); |
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execlp(prog, prog, NULL); |
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} |
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void setup_pager(void) |
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{ |
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pid_t pid; |
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int fd[2]; |
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if (!isatty(1)) |
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return; |
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if (pipe(fd) < 0) |
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return; |
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pid = fork(); |
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if (pid < 0) { |
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close(fd[0]); |
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close(fd[1]); |
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return; |
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} |
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/* return in the child */ |
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if (!pid) { |
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dup2(fd[1], 1); |
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close(fd[0]); |
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close(fd[1]); |
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return; |
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} |
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/* The original process turns into the PAGER */ |
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dup2(fd[0], 0); |
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close(fd[0]); |
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close(fd[1]); |
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run_pager(); |
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exit(255); |
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}
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