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Diffstat (limited to 'contrib/tcsh/tw.init.c')
| -rw-r--r-- | contrib/tcsh/tw.init.c | 1031 |
1 files changed, 1031 insertions, 0 deletions
diff --git a/contrib/tcsh/tw.init.c b/contrib/tcsh/tw.init.c new file mode 100644 index 0000000..68adbb9 --- /dev/null +++ b/contrib/tcsh/tw.init.c @@ -0,0 +1,1031 @@ +/* $Header: /p/tcsh/cvsroot/tcsh/tw.init.c,v 3.42 2011/04/17 14:49:30 christos Exp $ */ +/* + * tw.init.c: Handle lists of things to complete + */ +/*- + * Copyright (c) 1980, 1991 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#include "sh.h" + +RCSID("$tcsh: tw.init.c,v 3.42 2011/04/17 14:49:30 christos Exp $") + +#include "tw.h" +#include "ed.h" +#include "tc.h" +#include "sh.proc.h" + +#define TW_INCR 128 + +typedef struct { + Char **list, /* List of command names */ + *buff; /* Space holding command names */ + size_t nlist, /* Number of items */ + nbuff, /* Current space in name buf */ + tlist, /* Total space in list */ + tbuff; /* Total space in name buf */ +} stringlist_t; + + +static struct varent *tw_vptr = NULL; /* Current shell variable */ +static Char **tw_env = NULL; /* Current environment variable */ +static const Char *tw_word; /* Current word pointer */ +static struct KeyFuncs *tw_bind = NULL; /* List of the bindings */ +#ifndef HAVENOLIMIT +static struct limits *tw_limit = NULL; /* List of the resource limits */ +#endif /* HAVENOLIMIT */ +static int tw_index = 0; /* signal and job index */ +static DIR *tw_dir_fd = NULL; /* Current directory descriptor */ +static int tw_cmd_got = 0; /* What we need to do */ +static stringlist_t tw_cmd = { NULL, NULL, 0, 0, 0, 0 }; +static stringlist_t tw_item = { NULL, NULL, 0, 0, 0, 0 }; +#define TW_FL_CMD 0x01 +#define TW_FL_ALIAS 0x02 +#define TW_FL_BUILTIN 0x04 +#define TW_FL_SORT 0x08 +#define TW_FL_REL 0x10 + +static struct { /* Current element pointer */ + size_t cur; /* Current element number */ + Char **pathv; /* Current element in path */ + DIR *dfd; /* Current directory descriptor */ +} tw_cmd_state; + + +#define SETDIR(dfd) \ + { \ + tw_dir_fd = dfd; \ + if (tw_dir_fd != NULL) \ + rewinddir(tw_dir_fd); \ + } + +#define CLRDIR(dfd) \ + if (dfd != NULL) { \ + pintr_disabled++; \ + xclosedir(dfd); \ + dfd = NULL; \ + disabled_cleanup(&pintr_disabled); \ + } + +static Char *tw_str_add (stringlist_t *, size_t); +static void tw_str_free (stringlist_t *); +static int tw_dir_next (struct Strbuf *, DIR *); +static void tw_cmd_add (const Char *name); +static void tw_cmd_cmd (void); +static void tw_cmd_builtin (void); +static void tw_cmd_alias (void); +static void tw_cmd_sort (void); +static void tw_vptr_start (struct varent *); + + +/* tw_str_add(): + * Add an item to the string list + */ +static Char * +tw_str_add(stringlist_t *sl, size_t len) +{ + Char *ptr; + + if (sl->tlist <= sl->nlist) { + pintr_disabled++; + sl->tlist += TW_INCR; + sl->list = xrealloc(sl->list, sl->tlist * sizeof(Char *)); + disabled_cleanup(&pintr_disabled); + } + if (sl->tbuff <= sl->nbuff + len) { + size_t i; + + ptr = sl->buff; + pintr_disabled++; + sl->tbuff += TW_INCR + len; + sl->buff = xrealloc(sl->buff, sl->tbuff * sizeof(Char)); + /* Re-thread the new pointer list, if changed */ + if (ptr != NULL && ptr != sl->buff) { + intptr_t offs = sl->buff - ptr; + for (i = 0; i < sl->nlist; i++) + sl->list[i] += offs; + } + disabled_cleanup(&pintr_disabled); + } + ptr = sl->list[sl->nlist++] = &sl->buff[sl->nbuff]; + sl->nbuff += len; + return ptr; +} /* tw_str_add */ + + +/* tw_str_free(): + * Free a stringlist + */ +static void +tw_str_free(stringlist_t *sl) +{ + pintr_disabled++; + if (sl->list) { + xfree(sl->list); + sl->list = NULL; + sl->tlist = sl->nlist = 0; + } + if (sl->buff) { + xfree(sl->buff); + sl->buff = NULL; + sl->tbuff = sl->nbuff = 0; + } + disabled_cleanup(&pintr_disabled); +} /* end tw_str_free */ + + +static int +tw_dir_next(struct Strbuf *res, DIR *dfd) +{ + struct dirent *dirp; + + if (dfd == NULL) + return 0; + + if ((dirp = readdir(dfd)) != NULL) { + Strbuf_append(res, str2short(dirp->d_name)); + return 1; + } + return 0; +} /* end tw_dir_next */ + + +/* tw_cmd_add(): + * Add the name to the command list + */ +static void +tw_cmd_add(const Char *name) +{ + size_t len; + + len = Strlen(name) + 2; + (void) Strcpy(tw_str_add(&tw_cmd, len), name); +} /* end tw_cmd_add */ + + +/* tw_cmd_free(): + * Free the command list + */ +void +tw_cmd_free(void) +{ + CLRDIR(tw_dir_fd) + tw_str_free(&tw_cmd); + tw_cmd_got = 0; +} /* end tw_cmd_free */ + +/* tw_cmd_cmd(): + * Add system commands to the command list + */ +static void +tw_cmd_cmd(void) +{ + DIR *dirp; + struct dirent *dp; + Char *dir = NULL, *name; + Char **pv; + struct varent *v = adrof(STRpath); + struct varent *recexec = adrof(STRrecognize_only_executables); + size_t len; + + + if (v == NULL || v->vec == NULL) /* if no path */ + return; + + for (pv = v->vec; *pv; pv++) { + if (pv[0][0] != '/') { + tw_cmd_got |= TW_FL_REL; + continue; + } + + if ((dirp = opendir(short2str(*pv))) == NULL) + continue; + + cleanup_push(dirp, opendir_cleanup); + if (recexec) { + dir = Strspl(*pv, STRslash); + cleanup_push(dir, xfree); + } + while ((dp = readdir(dirp)) != NULL) { +#if defined(_UWIN) || defined(__CYGWIN__) + /* Turn foo.{exe,com,bat} into foo since UWIN's readdir returns + * the file with the .exe, .com, .bat extension + * + * Same for Cygwin, but only for .exe and .com extension. + */ + len = strlen(dp->d_name); + if (len > 4 && (strcmp(&dp->d_name[len - 4], ".exe") == 0 || +#ifndef __CYGWIN__ + strcmp(&dp->d_name[len - 4], ".bat") == 0 || +#endif /* !__CYGWIN__ */ + strcmp(&dp->d_name[len - 4], ".com") == 0)) + dp->d_name[len - 4] = '\0'; +#endif /* _UWIN || __CYGWIN__ */ + /* the call to executable() may make this a bit slow */ + name = str2short(dp->d_name); + if (dp->d_ino == 0 || (recexec && !executable(dir, name, 0))) + continue; + len = Strlen(name); + if (name[0] == '#' || /* emacs temp files */ + name[0] == '.' || /* .files */ + name[len - 1] == '~' || /* emacs backups */ + name[len - 1] == '%') /* textedit backups */ + continue; /* Ignore! */ + tw_cmd_add(name); + } + cleanup_until(dirp); + } +} /* end tw_cmd_cmd */ + + +/* tw_cmd_builtin(): + * Add builtins to the command list + */ +static void +tw_cmd_builtin(void) +{ + const struct biltins *bptr; + + for (bptr = bfunc; bptr < &bfunc[nbfunc]; bptr++) + if (bptr->bname) + tw_cmd_add(str2short(bptr->bname)); +#ifdef WINNT_NATIVE + for (bptr = nt_bfunc; bptr < &nt_bfunc[nt_nbfunc]; bptr++) + if (bptr->bname) + tw_cmd_add(str2short(bptr->bname)); +#endif /* WINNT_NATIVE*/ +} /* end tw_cmd_builtin */ + + +/* tw_cmd_alias(): + * Add aliases to the command list + */ +static void +tw_cmd_alias(void) +{ + struct varent *p; + struct varent *c; + + p = &aliases; + for (;;) { + while (p->v_left) + p = p->v_left; +x: + if (p->v_parent == 0) /* is it the header? */ + return; + if (p->v_name) + tw_cmd_add(p->v_name); + if (p->v_right) { + p = p->v_right; + continue; + } + do { + c = p; + p = p->v_parent; + } while (p->v_right == c); + goto x; + } +} /* end tw_cmd_alias */ + + +/* tw_cmd_sort(): + * Sort the command list removing duplicate elements + */ +static void +tw_cmd_sort(void) +{ + size_t fwd, i; + + pintr_disabled++; + /* sort the list. */ + qsort(tw_cmd.list, tw_cmd.nlist, sizeof(Char *), fcompare); + + /* get rid of multiple entries */ + for (i = 0, fwd = 0; i + 1 < tw_cmd.nlist; i++) { + if (Strcmp(tw_cmd.list[i], tw_cmd.list[i + 1]) == 0) /* garbage */ + fwd++; /* increase the forward ref. count */ + else if (fwd) + tw_cmd.list[i - fwd] = tw_cmd.list[i]; + } + /* Fix fencepost error -- Theodore Ts'o <tytso@athena.mit.edu> */ + if (fwd) + tw_cmd.list[i - fwd] = tw_cmd.list[i]; + tw_cmd.nlist -= fwd; + disabled_cleanup(&pintr_disabled); +} /* end tw_cmd_sort */ + + +/* tw_cmd_start(): + * Get the command list and sort it, if not done yet. + * Reset the current pointer to the beginning of the command list + */ +/*ARGSUSED*/ +void +tw_cmd_start(DIR *dfd, const Char *pat) +{ + static Char *defpath[] = { STRNULL, 0 }; + USE(pat); + SETDIR(dfd) + if ((tw_cmd_got & TW_FL_CMD) == 0) { + tw_cmd_free(); + tw_cmd_cmd(); + tw_cmd_got |= TW_FL_CMD; + } + if ((tw_cmd_got & TW_FL_ALIAS) == 0) { + tw_cmd_alias(); + tw_cmd_got &= ~TW_FL_SORT; + tw_cmd_got |= TW_FL_ALIAS; + } + if ((tw_cmd_got & TW_FL_BUILTIN) == 0) { + tw_cmd_builtin(); + tw_cmd_got &= ~TW_FL_SORT; + tw_cmd_got |= TW_FL_BUILTIN; + } + if ((tw_cmd_got & TW_FL_SORT) == 0) { + tw_cmd_sort(); + tw_cmd_got |= TW_FL_SORT; + } + + tw_cmd_state.cur = 0; + CLRDIR(tw_cmd_state.dfd) + if (tw_cmd_got & TW_FL_REL) { + struct varent *vp = adrof(STRpath); + if (vp && vp->vec) + tw_cmd_state.pathv = vp->vec; + else + tw_cmd_state.pathv = defpath; + } + else + tw_cmd_state.pathv = defpath; +} /* tw_cmd_start */ + + +/* tw_cmd_next(): + * Return the next element in the command list or + * Look for commands in the relative path components + */ +int +tw_cmd_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + int ret = 0; + Char *ptr; + + if (tw_cmd_state.cur < tw_cmd.nlist) { + *flags = TW_DIR_OK; + Strbuf_append(res, tw_cmd.list[tw_cmd_state.cur++]); + return 1; + } + + /* + * We need to process relatives in the path. + */ + while ((tw_cmd_state.dfd == NULL || + (res->len = 0, ret = tw_dir_next(res, tw_cmd_state.dfd)) == 0) && + *tw_cmd_state.pathv != NULL) { + + CLRDIR(tw_cmd_state.dfd) + + while (*tw_cmd_state.pathv && tw_cmd_state.pathv[0][0] == '/') + tw_cmd_state.pathv++; + if ((ptr = *tw_cmd_state.pathv) != 0) { + res->len = 0; + Strbuf_append(res, ptr); + ret = 1; + /* + * We complete directories only on '.' should that + * be changed? + */ + dir->len = 0; + if (ptr[0] == '\0' || (ptr[0] == '.' && ptr[1] == '\0')) { + tw_cmd_state.dfd = opendir("."); + *flags = TW_DIR_OK | TW_EXEC_CHK; + } + else { + Strbuf_append(dir, *tw_cmd_state.pathv); + Strbuf_append1(dir, '/'); + tw_cmd_state.dfd = opendir(short2str(*tw_cmd_state.pathv)); + *flags = TW_EXEC_CHK; + } + Strbuf_terminate(dir); + tw_cmd_state.pathv++; + } + } + return ret; +} /* end tw_cmd_next */ + + +/* tw_vptr_start(): + * Find the first variable in the variable list + */ +static void +tw_vptr_start(struct varent *c) +{ + tw_vptr = c; /* start at beginning of variable list */ + + for (;;) { + while (tw_vptr->v_left) + tw_vptr = tw_vptr->v_left; +x: + if (tw_vptr->v_parent == 0) { /* is it the header? */ + tw_vptr = NULL; + return; + } + if (tw_vptr->v_name) + return; /* found first one */ + if (tw_vptr->v_right) { + tw_vptr = tw_vptr->v_right; + continue; + } + do { + c = tw_vptr; + tw_vptr = tw_vptr->v_parent; + } while (tw_vptr->v_right == c); + goto x; + } +} /* end tw_shvar_start */ + + +/* tw_shvar_next(): + * Return the next shell variable + */ +/*ARGSUSED*/ +int +tw_shvar_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + struct varent *p; + struct varent *c; + + USE(flags); + USE(dir); + if ((p = tw_vptr) == NULL) + return 0; /* just in case */ + + Strbuf_append(res, p->v_name); /* we know that this name is here now */ + + /* now find the next one */ + for (;;) { + if (p->v_right) { /* if we can go right */ + p = p->v_right; + while (p->v_left) + p = p->v_left; + } + else { /* else go up */ + do { + c = p; + p = p->v_parent; + } while (p->v_right == c); + } + if (p->v_parent == 0) { /* is it the header? */ + tw_vptr = NULL; + return 1; + } + if (p->v_name) { + tw_vptr = p; /* save state for the next call */ + return 1; + } + } +} /* end tw_shvar_next */ + + +/* tw_envvar_next(): + * Return the next environment variable + */ +/*ARGSUSED*/ +int +tw_envvar_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + const Char *ps; + + USE(flags); + USE(dir); + if (tw_env == NULL || *tw_env == NULL) + return 0; + for (ps = *tw_env; *ps && *ps != '='; ps++) + continue; + Strbuf_appendn(res, *tw_env, ps - *tw_env); + tw_env++; + return 1; +} /* end tw_envvar_next */ + + +/* tw_var_start(): + * Begin the list of the shell and environment variables + */ +/*ARGSUSED*/ +void +tw_var_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) + tw_vptr_start(&shvhed); + tw_env = STR_environ; +} /* end tw_var_start */ + + +/* tw_alias_start(): + * Begin the list of the shell aliases + */ +/*ARGSUSED*/ +void +tw_alias_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) + tw_vptr_start(&aliases); + tw_env = NULL; +} /* tw_alias_start */ + + +/* tw_complete_start(): + * Begin the list of completions + */ +/*ARGSUSED*/ +void +tw_complete_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) + tw_vptr_start(&completions); + tw_env = NULL; +} /* end tw_complete_start */ + + +/* tw_var_next(): + * Return the next shell or environment variable + */ +int +tw_var_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + int ret = 0; + + if (tw_vptr) + ret = tw_shvar_next(res, dir, flags); + if (ret == 0 && tw_env) + ret = tw_envvar_next(res, dir, flags); + return ret; +} /* end tw_var_next */ + + +/* tw_logname_start(): + * Initialize lognames to the beginning of the list + */ +/*ARGSUSED*/ +void +tw_logname_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) +#ifdef HAVE_GETPWENT + (void) setpwent(); /* Open passwd file */ +#endif +} /* end tw_logname_start */ + + +/* tw_logname_next(): + * Return the next entry from the passwd file + */ +/*ARGSUSED*/ +int +tw_logname_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + struct passwd *pw; + + /* + * We don't want to get interrupted inside getpwent() + * because the yellow pages code is not interruptible, + * and if we call endpwent() immediatetely after + * (in pintr()) we may be freeing an invalid pointer + */ + USE(flags); + USE(dir); + pintr_disabled++; +#ifdef HAVE_GETPWENT + pw = getpwent(); +#else + pw = NULL; +#endif + disabled_cleanup(&pintr_disabled); + + if (pw == NULL) { +#ifdef YPBUGS + fix_yp_bugs(); +#endif + return 0; + } + Strbuf_append(res, str2short(pw->pw_name)); + return 1; +} /* end tw_logname_next */ + + +/* tw_logname_end(): + * Close the passwd file to finish the logname list + */ +void +tw_logname_end(void) +{ +#ifdef YPBUGS + fix_yp_bugs(); +#endif +#ifdef HAVE_GETPWENT + (void) endpwent(); +#endif +} /* end tw_logname_end */ + + +/* tw_grpname_start(): + * Initialize grpnames to the beginning of the list + */ +/*ARGSUSED*/ +void +tw_grpname_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) +#if !defined(_VMS_POSIX) && !defined(_OSD_POSIX) && !defined(WINNT_NATIVE) && !defined (__ANDROID__) + (void) setgrent(); /* Open group file */ +#endif /* !_VMS_POSIX && !_OSD_POSIX && !WINNT_NATIVE */ +} /* end tw_grpname_start */ + + +/* tw_grpname_next(): + * Return the next entry from the group file + */ +/*ARGSUSED*/ +int +tw_grpname_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + struct group *gr; + + /* + * We don't want to get interrupted inside getgrent() + * because the yellow pages code is not interruptible, + * and if we call endgrent() immediatetely after + * (in pintr()) we may be freeing an invalid pointer + */ + USE(flags); + USE(dir); + pintr_disabled++; +#if !defined(_VMS_POSIX) && !defined(_OSD_POSIX) && !defined(WINNT_NATIVE) && !defined(__ANDROID__) + errno = 0; + while ((gr = getgrent()) == NULL && errno == EINTR) { + handle_pending_signals(); + errno = 0; + } +#else /* _VMS_POSIX || _OSD_POSIX || WINNT_NATIVE */ + gr = NULL; +#endif /* !_VMS_POSIX && !_OSD_POSIX && !WINNT_NATIVE */ + disabled_cleanup(&pintr_disabled); + + if (gr == NULL) { +#ifdef YPBUGS + fix_yp_bugs(); +#endif + return 0; + } + Strbuf_append(res, str2short(gr->gr_name)); + return 1; +} /* end tw_grpname_next */ + + +/* tw_grpname_end(): + * Close the group file to finish the groupname list + */ +void +tw_grpname_end(void) +{ +#ifdef YPBUGS + fix_yp_bugs(); +#endif +#if !defined(_VMS_POSIX) && !defined(_OSD_POSIX) && !defined(WINNT_NATIVE) && !defined (__ANDROID__) + (void) endgrent(); +#endif /* !_VMS_POSIX && !_OSD_POSIX && !WINNT_NATIVE */ +} /* end tw_grpname_end */ + +/* tw_file_start(): + * Initialize the directory for the file list + */ +/*ARGSUSED*/ +void +tw_file_start(DIR *dfd, const Char *pat) +{ + struct varent *vp; + USE(pat); + SETDIR(dfd) + if ((vp = adrof(STRcdpath)) != NULL) + tw_env = vp->vec; +} /* end tw_file_start */ + + +/* tw_file_next(): + * Return the next file in the directory + */ +int +tw_file_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + int ret = tw_dir_next(res, tw_dir_fd); + if (ret == 0 && (*flags & TW_DIR_OK) != 0) { + CLRDIR(tw_dir_fd) + while (tw_env && *tw_env) + if ((tw_dir_fd = opendir(short2str(*tw_env))) != NULL) + break; + else + tw_env++; + + if (tw_dir_fd) { + dir->len = 0; + Strbuf_append(dir, *tw_env++); + Strbuf_append1(dir, '/'); + Strbuf_terminate(dir); + ret = tw_dir_next(res, tw_dir_fd); + } + } + return ret; +} /* end tw_file_next */ + + +/* tw_dir_end(): + * Clear directory related lists + */ +void +tw_dir_end(void) +{ + CLRDIR(tw_dir_fd) + CLRDIR(tw_cmd_state.dfd) +} /* end tw_dir_end */ + + +/* tw_item_free(): + * Free the item list + */ +void +tw_item_free(void) +{ + tw_str_free(&tw_item); +} /* end tw_item_free */ + + +/* tw_item_get(): + * Return the list of items + */ +Char ** +tw_item_get(void) +{ + return tw_item.list; +} /* end tw_item_get */ + + +/* tw_item_add(): + * Return a new item for a Strbuf_terminate()'d s + */ +void +tw_item_add(const struct Strbuf *s) +{ + Char *p; + + p = tw_str_add(&tw_item, s->len + 1); + Strcpy(p, s->s); +} /* tw_item_add */ + + +/* tw_item_find(): + * Find the string if it exists in the item list + * end return it. + */ +Char * +tw_item_find(Char *str) +{ + size_t i; + + if (tw_item.list == NULL || str == NULL) + return NULL; + + for (i = 0; i < tw_item.nlist; i++) + if (tw_item.list[i] != NULL && Strcmp(tw_item.list[i], str) == 0) + return tw_item.list[i]; + return NULL; +} /* end tw_item_find */ + + +/* tw_vl_start(): + * Initialize a variable list + */ +void +tw_vl_start(DIR *dfd, const Char *pat) +{ + SETDIR(dfd) + if ((tw_vptr = adrof(pat)) != NULL) { + tw_env = tw_vptr->vec; + tw_vptr = NULL; + } + else + tw_env = NULL; +} /* end tw_vl_start */ + + +/* + * Initialize a word list + */ +void +tw_wl_start(DIR *dfd, const Char *pat) +{ + SETDIR(dfd); + tw_word = pat; +} /* end tw_wl_start */ + + +/* + * Return the next word from the word list + */ +/*ARGSUSED*/ +int +tw_wl_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + const Char *p; + + USE(dir); + USE(flags); + if (tw_word == NULL || tw_word[0] == '\0') + return 0; + + while (*tw_word && Isspace(*tw_word)) tw_word++; + + for (p = tw_word; *tw_word && !Isspace(*tw_word); tw_word++) + continue; + if (tw_word == p) + return 0; + Strbuf_appendn(res, p, tw_word - p); + if (*tw_word) + tw_word++; + return 1; +} /* end tw_wl_next */ + + +/* tw_bind_start(): + * Begin the list of the shell bindings + */ +/*ARGSUSED*/ +void +tw_bind_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) + tw_bind = FuncNames; +} /* end tw_bind_start */ + + +/* tw_bind_next(): + * Begin the list of the shell bindings + */ +/*ARGSUSED*/ +int +tw_bind_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + USE(dir); + USE(flags); + if (tw_bind && tw_bind->name) { + const char *ptr; + + for (ptr = tw_bind->name; *ptr != '\0'; ptr++) + Strbuf_append1(res, *ptr); + tw_bind++; + return 1; + } + return 0; +} /* end tw_bind_next */ + + +/* tw_limit_start(): + * Begin the list of the shell limitings + */ +/*ARGSUSED*/ +void +tw_limit_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) +#ifndef HAVENOLIMIT + tw_limit = limits; +#endif /* ! HAVENOLIMIT */ +} /* end tw_limit_start */ + + +/* tw_limit_next(): + * Begin the list of the shell limitings + */ +/*ARGSUSED*/ +int +tw_limit_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + USE(dir); + USE(flags); +#ifndef HAVENOLIMIT + if (tw_limit && tw_limit->limname) { + const char *ptr; + + for (ptr = tw_limit->limname; *ptr != '\0'; ptr++) + Strbuf_append1(res, *ptr); + tw_limit++; + return 1; + } +#endif /* ! HAVENOLIMIT */ + return 0; +} /* end tw_limit_next */ + + +/* tw_sig_start(): + * Begin the list of the shell sigings + */ +/*ARGSUSED*/ +void +tw_sig_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) + tw_index = 0; +} /* end tw_sig_start */ + + +/* tw_sig_next(): + * Begin the list of the shell sigings + */ +/*ARGSUSED*/ +int +tw_sig_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + USE(dir); + USE(flags); + for (;tw_index < nsig; tw_index++) { + const char *ptr; + + if (mesg[tw_index].iname == NULL) + continue; + + for (ptr = mesg[tw_index].iname; *ptr != '\0'; ptr++) + Strbuf_append1(res, *ptr); + tw_index++; + return 1; + } + return 0; +} /* end tw_sig_next */ + + +/* tw_job_start(): + * Begin the list of the shell jobings + */ +/*ARGSUSED*/ +void +tw_job_start(DIR *dfd, const Char *pat) +{ + USE(pat); + SETDIR(dfd) + tw_index = 1; +} /* end tw_job_start */ + + +/* tw_job_next(): + * Begin the list of the shell jobings + */ +/*ARGSUSED*/ +int +tw_job_next(struct Strbuf *res, struct Strbuf *dir, int *flags) +{ + struct process *j; + + USE(dir); + USE(flags); + for (;tw_index <= pmaxindex; tw_index++) { + for (j = proclist.p_next; j != NULL; j = j->p_next) + if (j->p_index == tw_index && j->p_procid == j->p_jobid) + break; + if (j == NULL) + continue; + Strbuf_append(res, j->p_command); + tw_index++; + return 1; + } + return 0; +} /* end tw_job_next */ |
