]> git.cameronkatri.com Git - mandoc.git/blobdiff - main.c
Remove the hack of scrolling forward and backward with +G1G that
[mandoc.git] / main.c
diff --git a/main.c b/main.c
index 61e90fe581f52d22c0e95a20a2e31c2c7683b34f..92730522ae0e37d06ce0886ecc6a73734f694e20 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,4 +1,4 @@
-/*     $Id: main.c,v 1.232 2015/04/03 08:46:17 schwarze Exp $ */
+/*     $Id: main.c,v 1.244 2015/07/28 18:38:55 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2012, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
@@ -39,6 +39,7 @@
 #include "roff.h"
 #include "mdoc.h"
 #include "man.h"
+#include "tag.h"
 #include "main.h"
 #include "manconf.h"
 #include "mansearch.h"
@@ -58,8 +59,8 @@ enum  outmode {
        OUTMODE_ONE
 };
 
-typedef        void            (*out_mdoc)(void *, const struct mdoc *);
-typedef        void            (*out_man)(void *, const struct man *);
+typedef        void            (*out_mdoc)(void *, const struct roff_man *);
+typedef        void            (*out_man)(void *, const struct roff_man *);
 typedef        void            (*out_free)(void *);
 
 enum   outt {
@@ -94,7 +95,6 @@ static        int               fs_lookup(const struct manpaths *,
 static void              fs_search(const struct mansearch *,
                                const struct manpaths *, int, char**,
                                struct manpage **, size_t *);
-static void              handle_sigpipe(int);
 static int               koptions(int *, char *);
 #if HAVE_SQLITE3
 int                      mandocdb(int, char**);
@@ -104,7 +104,7 @@ static      void              mmsg(enum mandocerr, enum mandoclevel,
                                const char *, int, int, const char *);
 static void              parse(struct curparse *, int, const char *);
 static void              passthrough(const char *, int, int);
-static pid_t             spawn_pager(void);
+static pid_t             spawn_pager(struct tag_files *);
 static int               toptions(struct curparse *, char *);
 static void              usage(enum argmode) __attribute__((noreturn));
 static int               woptions(struct curparse *, char *);
@@ -122,6 +122,7 @@ main(int argc, char *argv[])
        struct manconf   conf;
        struct curparse  curp;
        struct mansearch search;
+       struct tag_files *tag_files;
        char            *auxpaths;
        char            *defos;
        unsigned char   *uc;
@@ -135,8 +136,8 @@ main(int argc, char *argv[])
        int              fd;
        int              show_usage;
        int              options;
+       int              use_pager;
        int              c;
-       pid_t            pager_pid;  /* 0: don't use; 1: not yet spawned. */
 
        if (argc < 1)
                progname = "mandoc";
@@ -179,7 +180,8 @@ main(int argc, char *argv[])
        options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
        defos = NULL;
 
-       pager_pid = 1;
+       use_pager = 1;
+       tag_files = NULL;
        show_usage = 0;
        outmode = OUTMODE_DEF;
 
@@ -193,14 +195,14 @@ main(int argc, char *argv[])
                        conf_file = optarg;
                        break;
                case 'c':
-                       pager_pid = 0;
+                       use_pager = 0;
                        break;
                case 'f':
                        search.argmode = ARG_WORD;
                        break;
                case 'h':
                        conf.output.synopsisonly = 1;
-                       pager_pid = 0;
+                       use_pager = 0;
                        outmode = OUTMODE_ALL;
                        break;
                case 'I':
@@ -276,7 +278,7 @@ main(int argc, char *argv[])
                switch (search.argmode) {
                case ARG_FILE:
                        outmode = OUTMODE_ALL;
-                       pager_pid = 0;
+                       use_pager = 0;
                        break;
                case ARG_NAME:
                        outmode = OUTMODE_ONE;
@@ -352,9 +354,15 @@ main(int argc, char *argv[])
                sz = 0;
 #endif
 
-               if (sz == 0 && search.argmode == ARG_NAME)
-                       fs_search(&search, &conf.manpath,
-                           argc, argv, &res, &sz);
+               if (sz == 0) {
+                       if (search.argmode == ARG_NAME)
+                               fs_search(&search, &conf.manpath,
+                                   argc, argv, &res, &sz);
+                       else
+                               fprintf(stderr,
+                                   "%s: nothing appropriate\n",
+                                   progname);
+               }
 
                if (sz == 0) {
                        rc = MANDOCLEVEL_BADARG;
@@ -412,6 +420,9 @@ main(int argc, char *argv[])
        if (search.argmode == ARG_FILE && ! moptions(&options, auxpaths))
                return((int)MANDOCLEVEL_BADARG);
 
+       if (use_pager && ! isatty(STDOUT_FILENO))
+               use_pager = 0;
+
        curp.mchars = mchars_alloc();
        curp.mp = mparse_alloc(options, curp.wlevel, mmsg,
            curp.mchars, defos);
@@ -423,8 +434,8 @@ main(int argc, char *argv[])
                mparse_keep(curp.mp);
 
        if (argc < 1) {
-               if (pager_pid == 1 && isatty(STDOUT_FILENO))
-                       pager_pid = spawn_pager();
+               if (use_pager)
+                       tag_files = tag_init();
                parse(&curp, STDIN_FILENO, "<stdin>");
        }
 
@@ -435,8 +446,10 @@ main(int argc, char *argv[])
                        rc = rctmp;
 
                if (fd != -1) {
-                       if (pager_pid == 1 && isatty(STDOUT_FILENO))
-                               pager_pid = spawn_pager();
+                       if (use_pager) {
+                               tag_files = tag_init();
+                               use_pager = 0;
+                       }
 
                        if (resp == NULL)
                                parse(&curp, fd, *argv);
@@ -448,10 +461,6 @@ main(int argc, char *argv[])
                                passthrough(resp->file, fd,
                                    conf.output.synopsisonly);
 
-                       rctmp = mparse_wait(curp.mp);
-                       if (rc < rctmp)
-                               rc = rctmp;
-
                        if (argc > 1 && curp.outtype <= OUTT_UTF8)
                                ascii_sepline(curp.outdata);
                }
@@ -484,14 +493,15 @@ out:
        free(defos);
 
        /*
-        * If a pager is attached, flush the pipe leading to it
-        * and signal end of file such that the user can browse
-        * to the end.  Then wait for the user to close the pager.
+        * When using a pager, finish writing both temporary files,
+        * fork it, wait for the user to close it, and clean up.
         */
 
-       if (pager_pid != 0 && pager_pid != 1) {
+       if (tag_files != NULL) {
                fclose(stdout);
-               waitpid(pager_pid, NULL, 0);
+               tag_write();
+               waitpid(spawn_pager(tag_files), NULL, 0);
+               tag_unlink();
        }
 
        return((int)rc);
@@ -561,7 +571,7 @@ fs_lookup(const struct manpaths *paths, size_t ipath,
                free(file);
        }
 
-       mandoc_asprintf(&file, "%s/man%s/%s.*",
+       mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
            paths->paths[ipath], sec, name);
        globres = glob(file, 0, NULL, &globinfo);
        if (globres != 0 && globres != GLOB_NOMATCH)
@@ -576,11 +586,9 @@ fs_lookup(const struct manpaths *paths, size_t ipath,
 
 found:
 #if HAVE_SQLITE3
-       fprintf(stderr, "%s: outdated mandoc.db lacks %s(%s) entry,\n"
-           "     consider running  # makewhatis %s\n",
-           progname, name, sec, paths->paths[ipath]);
+       fprintf(stderr, "%s: outdated mandoc.db lacks %s(%s) entry, run "
+           "makewhatis %s\n", progname, name, sec, paths->paths[ipath]);
 #endif
-
        *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
        page = *res + (*ressz - 1);
        page->file = file;
@@ -634,8 +642,7 @@ static void
 parse(struct curparse *curp, int fd, const char *file)
 {
        enum mandoclevel  rctmp;
-       struct mdoc      *mdoc;
-       struct man       *man;
+       struct roff_man  *man;
 
        /* Begin by parsing the file itself. */
 
@@ -722,14 +729,16 @@ parse(struct curparse *curp, int fd, const char *file)
                }
        }
 
-       mparse_result(curp->mp, &mdoc, &man, NULL);
+       mparse_result(curp->mp, &man, NULL);
 
        /* Execute the out device, if it exists. */
 
-       if (man && curp->outman)
+       if (man == NULL)
+               return;
+       if (curp->outmdoc != NULL && man->macroset == MACROSET_MDOC)
+               (*curp->outmdoc)(curp->outdata, man);
+       if (curp->outman != NULL && man->macroset == MACROSET_MAN)
                (*curp->outman)(curp->outdata, man);
-       if (mdoc && curp->outmdoc)
-               (*curp->outmdoc)(curp->outdata, mdoc);
 }
 
 static void
@@ -940,59 +949,17 @@ mmsg(enum mandocerr t, enum mandoclevel lvl,
        fputc('\n', stderr);
 }
 
-static void
-handle_sigpipe(int signum)
-{
-
-       exit((int)rc);
-}
-
 static pid_t
-spawn_pager(void)
+spawn_pager(struct tag_files *tag_files)
 {
 #define MAX_PAGER_ARGS 16
        char            *argv[MAX_PAGER_ARGS];
        const char      *pager;
        char            *cp;
-       int              fildes[2];
+       size_t           cmdlen;
        int              argc;
        pid_t            pager_pid;
 
-       if (pipe(fildes) == -1) {
-               fprintf(stderr, "%s: pipe: %s\n",
-                   progname, strerror(errno));
-               return(0);
-       }
-
-       switch (pager_pid = fork()) {
-       case -1:
-               fprintf(stderr, "%s: fork: %s\n",
-                   progname, strerror(errno));
-               exit((int)MANDOCLEVEL_SYSERR);
-       case 0:
-               break;
-       default:
-               close(fildes[0]);
-               if (dup2(fildes[1], STDOUT_FILENO) == -1) {
-                       fprintf(stderr, "%s: dup output: %s\n",
-                           progname, strerror(errno));
-                       exit((int)MANDOCLEVEL_SYSERR);
-               }
-               close(fildes[1]);
-               signal(SIGPIPE, handle_sigpipe);
-               return(pager_pid);
-       }
-
-       /* The child process becomes the pager. */
-
-       close(fildes[1]);
-       if (dup2(fildes[0], STDIN_FILENO) == -1) {
-               fprintf(stderr, "%s: dup input: %s\n",
-                   progname, strerror(errno));
-               exit((int)MANDOCLEVEL_SYSERR);
-       }
-       close(fildes[0]);
-
        pager = getenv("MANPAGER");
        if (pager == NULL || *pager == '\0')
                pager = getenv("PAGER");
@@ -1006,7 +973,7 @@ spawn_pager(void)
         */
 
        argc = 0;
-       while (argc + 1 < MAX_PAGER_ARGS) {
+       while (argc + 4 < MAX_PAGER_ARGS) {
                argv[argc++] = cp;
                cp = strchr(cp, ' ');
                if (cp == NULL)
@@ -1017,12 +984,40 @@ spawn_pager(void)
                if (*cp == '\0')
                        break;
        }
+
+       /* For more(1) and less(1), use the tag file. */
+
+       if ((cmdlen = strlen(argv[0])) >= 4) {
+               cp = argv[0] + cmdlen - 4;
+               if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
+                       argv[argc++] = mandoc_strdup("-T");
+                       argv[argc++] = tag_files->tfn;
+               }
+       }
+       argv[argc++] = tag_files->ofn;
        argv[argc] = NULL;
 
-       /* Hand over to the pager. */
+       switch (pager_pid = fork()) {
+       case -1:
+               fprintf(stderr, "%s: fork: %s\n",
+                   progname, strerror(errno));
+               exit((int)MANDOCLEVEL_SYSERR);
+       case 0:
+               break;
+       default:
+               return(pager_pid);
+       }
+
+       /* The child process becomes the pager. */
 
+       if (dup2(tag_files->ofd, STDOUT_FILENO) == -1) {
+               fprintf(stderr, "pager: stdout: %s\n", strerror(errno));
+               exit((int)MANDOCLEVEL_SYSERR);
+       }
+       close(tag_files->ofd);
+       close(tag_files->tfd);
        execvp(argv[0], argv);
-       fprintf(stderr, "%s: exec: %s\n",
-           progname, strerror(errno));
+       fprintf(stderr, "%s: exec %s: %s\n",
+           progname, argv[0], strerror(errno));
        exit((int)MANDOCLEVEL_SYSERR);
 }