#include <sys/select.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <signal.h> #include <sys/ioctl.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; static int pager_columns; void pager_init(const char *pager_env) { subcmd_config.pager_env = pager_env; } 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); } 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); } static void wait_for_pager_signal(int signo) { wait_for_pager(); sigchain_pop(signo); raise(signo); } void setup_pager(void) { const char *pager = getenv(subcmd_config.pager_env); struct winsize sz; if (!isatty(1)) return; if (ioctl(1, TIOCGWINSZ, &sz) == 0) pager_columns = sz.ws_col; 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); } int pager_in_use(void) { return spawned_pager; } int pager_get_columns(void) { char *s; s = getenv("COLUMNS"); if (s) return atoi(s); return (pager_columns ? pager_columns : 80) - 2; } right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/ceph/crush/hash.c'> <input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='b6878eaf75176e9acb6463ea1e50edddd309931f'/><select name='qt'> <option value='grep'>log msg</option> <option value='author'>author</option> <option value='committer'>committer</option> <option value='range'>range</option> </select> <input class='txt' type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&id=b6878eaf75176e9acb6463ea1e50edddd309931f'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&id=b6878eaf75176e9acb6463ea1e50edddd309931f'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/ceph?h=nds-private-remove&id=b6878eaf75176e9acb6463ea1e50edddd309931f'>ceph</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/ceph/crush?h=nds-private-remove&id=b6878eaf75176e9acb6463ea1e50edddd309931f'>crush</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/ceph/crush/hash.c?h=nds-private-remove&id=b6878eaf75176e9acb6463ea1e50edddd309931f'>hash.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/ceph/crush/hash.c?h=nds-private-remove&id=b6878eaf75176e9acb6463ea1e50edddd309931f&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>