NetBSD-5.0.2/usr.bin/mail/complete.c
/* $NetBSD: complete.c,v 1.15 2008/04/28 20:24:14 martin Exp $ */
/*-
* Copyright (c) 1997-2000,2005,2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Most of this is derived or copied from src/usr.bin/ftp/complete.c (1.41).
*/
#ifdef USE_EDITLINE
#undef NO_EDITCOMPLETE
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: complete.c,v 1.15 2008/04/28 20:24:14 martin Exp $");
#endif /* not lint */
/*
* FTP user program - command and file completion routines
*/
#include <assert.h>
#include <ctype.h>
#include <err.h>
#include <dirent.h>
#include <glob.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stringlist.h>
#include <util.h>
#include <sys/param.h>
#include <sys/stat.h>
#include "rcv.h" /* includes "glob.h" */
#include "extern.h"
#include "complete.h"
#ifdef MIME_SUPPORT
#include "mime.h"
#endif
#ifdef THREAD_SUPPORT
#include "thread.h"
#endif
#define BELL 0x7
/*
* Global variables
*/
static int doglob = 1; /* glob local file names */
#define ttyout stdout
#define ttywidth screenwidth /* in "glob.h" */
#define ttyheight screenheight /* in "glob.h" */
/************************************************************************/
/* from src/usr.bin/ftp/utils.h (1.135) - begin */
/*
* List words in stringlist, vertically arranged
*/
static void
list_vertical(StringList *sl)
{
int i, j, k;
int columns, lines;
char *p;
size_t w, width;
width = 0;
for (i = 0; i < sl->sl_cur; i++) {
w = strlen(sl->sl_str[i]);
if (w > width)
width = w;
}
width = (width + 8) &~ 7;
columns = ttywidth / width;
if (columns == 0)
columns = 1;
lines = (sl->sl_cur + columns - 1) / columns;
k = 0;
for (i = 0; i < lines; i++) {
for (j = 0; j < columns; j++) {
p = sl->sl_str[j * lines + i];
if (p)
(void)fputs(p, ttyout);
if (j * lines + i + lines >= sl->sl_cur) {
(void)putc('\n', ttyout);
break;
}
if (p) {
w = strlen(p);
while (w < width) {
w = (w + 8) &~ 7;
(void)putc('\t', ttyout);
}
}
}
if (ttyheight > 2 && ++k == ttyheight - 2) {
int ch;
k = 0;
(void)fputs("--more--", ttyout);
while ((ch = getchar()) != EOF && ch != ' ' && ch != 'q')
(void)putc(BELL, ttyout);
(void)fputs("\r \r", ttyout);
if (ch == 'q')
break;
}
}
}
/*
* Copy characters from src into dst, \ quoting characters that require it
*/
static void
ftpvis(char *dst, size_t dstlen, const char *src, size_t srclen)
{
int di, si;
for (di = si = 0;
src[si] != '\0' && di < dstlen && si < srclen;
di++, si++) {
switch (src[si]) {
case '\\':
case ' ':
case '\t':
case '\r':
case '\n':
case '"':
dst[di++] = '\\';
if (di >= dstlen)
break;
/* FALLTHROUGH */
default:
dst[di] = src[si];
}
}
dst[di] = '\0';
}
/*
* sl_init() with inbuilt error checking
*/
static StringList *
mail_sl_init(void)
{
StringList *p;
p = sl_init();
if (p == NULL)
err(1, "Unable to allocate memory for stringlist");
return p;
}
/*
* sl_add() with inbuilt error checking
*/
static void
mail_sl_add(StringList *sl, char *i)
{
if (sl_add(sl, i) == -1)
err(1, "Unable to add `%s' to stringlist", i);
}
/*
* Glob a local file name specification with the expectation of a single
* return value. Can't control multiple values being expanded from the
* expression, we return only the first.
* Returns NULL on error, or a pointer to a buffer containing the filename
* that's the caller's responsiblity to free(3) when finished with.
*/
static char *
globulize(const char *pattern)
{
glob_t gl;
int flags;
char *p;
if (!doglob)
return estrdup(pattern);
flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_TILDE;
(void)memset(&gl, 0, sizeof(gl));
if (glob(pattern, flags, NULL, &gl) || gl.gl_pathc == 0) {
warnx("%s: not found", pattern);
globfree(&gl);
return NULL;
}
p = estrdup(gl.gl_pathv[0]);
globfree(&gl);
return p;
}
/* from src/usr.bin/ftp/utils.h (1.135) - end */
/************************************************************************/
static int
comparstr(const void *a, const void *b)
{
return strcmp(*(const char * const *)a, *(const char * const *)b);
}
/*
* Determine if complete is ambiguous. If unique, insert.
* If no choices, error. If unambiguous prefix, insert that.
* Otherwise, list choices. words is assumed to be filtered
* to only contain possible choices.
* Args:
* word word which started the match
* dolist list by default
* words stringlist containing possible matches
* Returns a result as per el_set(EL_ADDFN, ...)
*/
static unsigned char
complete_ambiguous(EditLine *el, char *word, int dolist, StringList *words)
{
char insertstr[MAXPATHLEN];
char *lastmatch, *p;
int i, j;
size_t matchlen, wordlen;
wordlen = strlen(word);
if (words->sl_cur == 0)
return CC_ERROR; /* no choices available */
if (words->sl_cur == 1) { /* only once choice available */
p = words->sl_str[0] + wordlen;
if (*p == '\0') /* at end of word? */
return CC_REFRESH;
ftpvis(insertstr, sizeof(insertstr), p, strlen(p));
if (el_insertstr(el, insertstr) == -1)
return CC_ERROR;
else
return CC_REFRESH;
}
if (!dolist) {
matchlen = 0;
lastmatch = words->sl_str[0];
matchlen = strlen(lastmatch);
for (i = 1; i < words->sl_cur; i++) {
for (j = wordlen; j < strlen(words->sl_str[i]); j++)
if (lastmatch[j] != words->sl_str[i][j])
break;
if (j < matchlen)
matchlen = j;
}
if (matchlen >= wordlen) {
ftpvis(insertstr, sizeof(insertstr),
lastmatch + wordlen, matchlen - wordlen);
if (el_insertstr(el, insertstr) == -1)
return CC_ERROR;
else
return CC_REFRESH_BEEP;
}
}
(void)putc('\n', ttyout);
qsort(words->sl_str, words->sl_cur, sizeof(char *), comparstr);
list_vertical(words);
return CC_REDISPLAY;
}
/*
* Complete a mail command.
*/
static unsigned char
complete_command(EditLine *el, char *word, int dolist)
{
const struct cmd *c;
StringList *words;
size_t wordlen;
unsigned char rv;
words = mail_sl_init();
wordlen = strlen(word);
for (c = cmdtab; c->c_name != NULL; c++) {
if (wordlen > strlen(c->c_name))
continue;
if (strncmp(word, c->c_name, wordlen) == 0)
mail_sl_add(words, __UNCONST(c->c_name));
}
rv = complete_ambiguous(el, word, dolist, words);
if (rv == CC_REFRESH) {
if (el_insertstr(el, " ") == -1)
rv = CC_ERROR;
}
sl_free(words, 0);
return rv;
}
/*
* Complete a local filename.
*/
static unsigned char
complete_filename(EditLine *el, char *word, int dolist)
{
StringList *words;
char dir[MAXPATHLEN];
char *fname;
DIR *dd;
struct dirent *dp;
unsigned char rv;
size_t len;
if ((fname = strrchr(word, '/')) == NULL) {
dir[0] = '.';
dir[1] = '\0';
fname = word;
} else {
if (fname == word) {
dir[0] = '/';
dir[1] = '\0';
} else {
len = fname - word + 1;
(void)estrlcpy(dir, word, sizeof(dir));
dir[len] = '\0';
}
fname++;
}
if (dir[0] == '~') {
char *p;
if ((p = globulize(dir)) == NULL)
return CC_ERROR;
(void)estrlcpy(dir, p, sizeof(dir));
free(p);
}
if ((dd = opendir(dir)) == NULL)
return CC_ERROR;
words = mail_sl_init();
len = strlen(fname);
for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
#if defined(DIRENT_MISSING_D_NAMLEN)
if (len > strlen(dp->d_name))
continue;
#else
if (len > dp->d_namlen)
continue;
#endif
if (strncmp(fname, dp->d_name, len) == 0) {
char *tcp;
tcp = estrdup(dp->d_name);
mail_sl_add(words, tcp);
}
}
(void)closedir(dd);
rv = complete_ambiguous(el, fname, dolist, words);
if (rv == CC_REFRESH) {
struct stat sb;
char path[MAXPATHLEN];
(void)estrlcpy(path, dir, sizeof(path));
(void)estrlcat(path, "/", sizeof(path));
(void)estrlcat(path, words->sl_str[0], sizeof(path));
if (stat(path, &sb) >= 0) {
char suffix[2] = " ";
if (S_ISDIR(sb.st_mode))
suffix[0] = '/';
if (el_insertstr(el, suffix) == -1)
rv = CC_ERROR;
}
}
sl_free(words, 1);
return rv;
}
static int
find_execs(char *word, char *path, StringList *list)
{
char *sep;
char *dir=path;
DIR *dd;
struct dirent *dp;
size_t len = strlen(word);
uid_t uid = getuid();
gid_t gid = getgid();
for (sep = dir; sep; dir = sep + 1) {
if ((sep=strchr(dir, ':')) != NULL) {
*sep=0;
}
if ((dd = opendir(dir)) == NULL) {
perror("dir");
return -1;
}
for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
#if defined(DIRENT_MISSING_D_NAMLEN)
if (len > strlen(dp->d_name))
continue;
#else
if (len > dp->d_namlen)
continue;
#endif
if (strncmp(word, dp->d_name, len) == 0) {
struct stat sb;
char pathname[ MAXPATHLEN ];
unsigned mask;
(void)snprintf(pathname, sizeof(pathname),
"%s/%s", dir, dp->d_name);
if (stat(pathname, &sb) != 0) {
perror(pathname);
continue;
}
mask = 0001;
if (sb.st_uid == uid) mask |= 0100;
if (sb.st_gid == gid) mask |= 0010;
if ((sb.st_mode & mask) != 0) {
char *tcp;
tcp = estrdup(dp->d_name);
mail_sl_add(list, tcp);
}
}
}
(void)closedir(dd);
}
return 0;
}
/*
* Complete a local executable
*/
static unsigned char
complete_executable(EditLine *el, char *word, int dolist)
{
StringList *words;
char dir[ MAXPATHLEN ];
char *fname;
unsigned char rv;
size_t len;
int error;
if ((fname = strrchr(word, '/')) == NULL) {
dir[0] = '\0'; /* walk the path */
fname = word;
} else {
if (fname == word) {
dir[0] = '/';
dir[1] = '\0';
} else {
len = fname - word;
(void)strncpy(dir, word, len);
dir[fname - word] = '\0';
}
fname++;
}
words = sl_init();
if (*dir == '\0') { /* walk path */
char *env;
char *path;
env = getenv("PATH");
len = strlen(env);
path = salloc(len + 1);
(void)strcpy(path, env);
error = find_execs(word, path, words);
}
else { /* check specified dir only */
error = find_execs(word, dir, words);
}
if (error != 0)
return CC_ERROR;
rv = complete_ambiguous(el, fname, dolist, words);
if (rv == CC_REFRESH) {
if (el_insertstr(el, " ") == -1)
rv = CC_ERROR;
}
sl_free(words, 1);
return rv;
}
static unsigned char
complete_set(EditLine *el, char *word, int dolist)
{
struct var *vp;
const char **ap;
const char **p;
int h;
int s;
size_t len = strlen(word);
StringList *words;
unsigned char rv;
words = sl_init();
/* allocate space for variables table */
s = 1;
for (h = 0; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NULL; vp = vp->v_link)
s++;
ap = salloc(s * sizeof(*ap));
/* save the pointers */
for (h = 0, p = ap; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NULL; vp = vp->v_link)
*p++ = vp->v_name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
if (len == 0 || strncmp(*p, word, len) == 0)
mail_sl_add(words, estrdup(*p));
rv = complete_ambiguous(el, word, dolist, words);
sl_free(words, 1);
return rv;
}
static unsigned char
complete_alias(EditLine *el, char *word, int dolist)
{
struct grouphead *gh;
const char **ap;
const char **p;
int h;
int s;
size_t len = strlen(word);
StringList *words;
unsigned char rv;
words = sl_init();
/* allocate space for alias table */
s = 1;
for (h = 0; h < HSHSIZE; h++)
for (gh = groups[h]; gh != NULL; gh = gh->g_link)
s++;
ap = salloc(s * sizeof(*ap));
/* save pointers */
p = ap;
for (h = 0; h < HSHSIZE; h++)
for (gh = groups[h]; gh != NULL; gh = gh->g_link)
*p++ = gh->g_name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
if (len == 0 || strncmp(*p, word, len) == 0)
mail_sl_add(words, estrdup(*p));
rv = complete_ambiguous(el, word, dolist, words);
if (rv == CC_REFRESH) {
if (el_insertstr(el, " ") == -1)
rv = CC_ERROR;
}
sl_free(words, 1);
return rv;
}
static unsigned char
complete_smopts(EditLine *el, char *word, int dolist)
{
struct grouphead *gh;
struct smopts_s *sp;
const char **ap;
const char **p;
int h;
int s1;
int s2;
size_t len;
StringList *words;
unsigned char rv;
len = strlen(word);
words = sl_init();
/* count the entries in the smoptstbl and groups (alias) tables */
s1 = 1;
s2 = 1;
for (h = 0; h < HSHSIZE; h++) {
for (sp = smoptstbl[h]; sp != NULL; sp = sp->s_link)
s1++;
for (gh = groups[h]; gh != NULL; gh = gh->g_link)
s2++;
}
/* allocate sufficient space for the pointers */
ap = salloc(MAX(s1, s2) * sizeof(*ap));
/*
* First do the smoptstbl pointers. (case _insensitive_)
*/
p = ap;
for (h = 0; h < HSHSIZE; h++)
for (sp = smoptstbl[h]; sp != NULL; sp = sp->s_link)
*p++ = sp->s_name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
if (len == 0 || strncasecmp(*p, word, len) == 0)
mail_sl_add(words, estrdup(*p));
/*
* Now do the groups (alias) pointers. (case sensitive)
*/
p = ap;
for (h = 0; h < HSHSIZE; h++)
for (gh = groups[h]; gh != NULL; gh = gh->g_link)
*p++ = gh->g_name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
if (len == 0 || strncmp(*p, word, len) == 0)
mail_sl_add(words, estrdup(*p));
rv = complete_ambiguous(el, word, dolist, words);
sl_free(words, 1);
return rv;
}
#ifdef THREAD_SUPPORT
static unsigned char
complete_thread_key(EditLine *el, char *word, int dolist)
{
const char **ap;
const char **p;
const char *name;
size_t len;
StringList *words;
unsigned char rv;
int cnt;
const void *cookie;
len = strlen(word);
words = sl_init();
/* count the entries in the table */
/* XXX - have a function return this rather than counting? */
cnt = 1; /* count the NULL terminator */
cookie = NULL;
while (thread_next_key_name(&cookie) != NULL)
cnt++;
/* allocate sufficient space for the pointers */
ap = salloc(cnt * sizeof(*ap));
/* load the array */
p = ap;
cookie = NULL;
while ((name = thread_next_key_name(&cookie)) != NULL)
*p++ = name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
if (len == 0 || strncmp(*p, word, len) == 0)
mail_sl_add(words, estrdup(*p));
rv = complete_ambiguous(el, word, dolist, words);
sl_free(words, 1);
return rv;
}
#endif /* THREAD_SUPPORT */
/* from /usr/src/usr.bin/ftp/main.c(1.101) - end */
/************************************************************************/
/* Some people like to bind file completion to CTRL-D. In emacs mode,
* CTRL-D is also used to delete the current character, we have to
* special case this situation.
*/
#define EMACS_CTRL_D_BINDING_HACK
#ifdef EMACS_CTRL_D_BINDING_HACK
static int
is_emacs_mode(EditLine *el)
{
char *mode;
if (el_get(el, EL_EDITOR, &mode) == -1)
return 0;
return equal(mode, "emacs");
}
static int
emacs_ctrl_d(EditLine *el, const LineInfo *lf, int ch)
{
static char delunder[3] = { CTRL('f'), CTRL('h'), '\0' };
if (ch == CTRL('d') && is_emacs_mode(el)) { /* CTRL-D is special */
if (lf->buffer == lf->lastchar)
return CC_EOF;
if (lf->cursor != lf->lastchar) { /* delete without using ^D */
el_push(el, delunder); /* ^F^H */
return CC_NORM;
}
}
return -1;
}
#endif /* EMACS_CTRL_D_BINDING_HACK */
/*
* Check if this is the second request made for this line indicating
* the need to list all the completion possibilities.
*/
static int
get_dolist(const LineInfo *lf)
{
static char last_line[LINESIZE];
static char *last_cursor_pos;
char *cursor_pos;
int dolist;
size_t len;
len = lf->lastchar - lf->buffer;
if (len >= sizeof(last_line) - 1)
return -1;
cursor_pos = last_line + (lf->cursor - lf->buffer);
dolist =
cursor_pos == last_cursor_pos &&
strncmp(last_line, lf->buffer, len) == 0;
(void)strlcpy(last_line, lf->buffer, len + 1);
last_cursor_pos = cursor_pos;
return dolist;
}
/*
* Take the full line (lf) including the command and split it into a
* sub-line (returned) and a completion context (cmplarray).
*/
static LineInfo *
split_line(const char **cmplarray, const LineInfo *lf)
{
static LineInfo li;
const struct cmd *c;
char *cmdname;
char line[LINESIZE];
char *cp;
size_t len;
len = lf->cursor - lf->buffer;
if (len + 1 > sizeof(line))
return NULL;
(void)strlcpy(line, lf->buffer, len + 1);
li.cursor = line + len;
li.lastchar = line + len;
cp = skip_WSP(line);
cmdname = get_cmdname(cp);
cp += strlen(cmdname);
if (cp == li.cursor) {
*cmplarray = "c";
li.buffer = cmdname;
return &li;
}
c = lex(cmdname);
if (c == NULL)
return NULL;
*cmplarray = c->c_complete;
if (c->c_pipe) {
char *cp2;
if ((cp2 = shellpr(cp)) != NULL) {
cp = cp2;
# define XX(a) ((a) + ((a)[1] == '>' ? 2 : 1))
while ((cp2 = shellpr(XX(cp))) != NULL)
cp = cp2;
if (*cp == '|') {
*cmplarray = "xF";
cp = skip_WSP(cp + 1);
}
else {
assert(*cp == '>');
cp = skip_WSP(XX(cp));
*cmplarray = "f";
}
# undef XX
}
}
li.buffer = cp;
return &li;
}
/*
* Split a sub-line and a completion context into a word and a
* completion type. Use the editline tokenizer to handle the quoting
* and splitting.
*/
static char *
split_word(int *cmpltype, const char *cmplarray, LineInfo *li)
{
static Tokenizer *t = NULL;
const char **argv;
char *word;
int argc;
int cursorc;
int cursoro;
int arraylen;
if (t != NULL)
tok_reset(t);
else {
if ((t = tok_init(NULL)) == NULL)
err(EXIT_FAILURE, "tok_init");
}
if (tok_line(t, li, &argc, &argv, &cursorc, &cursoro) == -1)
err(EXIT_FAILURE, "tok_line");
if (cursorc >= argc)
word = __UNCONST("");
else {
word = salloc((size_t)cursoro + 1);
(void)strlcpy(word, argv[cursorc], (size_t)cursoro + 1);
}
/* check for 'continuation' completes (which are uppercase) */
arraylen = strlen(cmplarray);
if (cursorc >= arraylen &&
arraylen > 0 &&
isupper((unsigned char)cmplarray[arraylen - 1]))
cursorc = arraylen - 1;
if (cursorc >= arraylen)
return NULL;
*cmpltype = cmplarray[cursorc];
return word;
}
/*
* A generic complete routine for the mail command line.
*/
static unsigned char
mail_complete(EditLine *el, int ch)
{
LineInfo *li;
const LineInfo *lf;
const char *cmplarray;
int dolist;
int cmpltype;
char *word;
lf = el_line(el);
#ifdef EMACS_CTRL_D_BINDING_HACK
{
int cc_ret;
if ((cc_ret = emacs_ctrl_d(el, lf, ch)) != -1)
return cc_ret;
}
#endif /* EMACS_CTRL_D_BINDING_HACK */
if ((dolist = get_dolist(lf)) == -1)
return CC_ERROR;
if ((li = split_line(&cmplarray, lf)) == NULL)
return CC_ERROR;
if ((word = split_word(&cmpltype, cmplarray, li)) == NULL)
return CC_ERROR;
switch (cmpltype) {
case 'a': /* alias complete */
case 'A':
return complete_alias(el, word, dolist);
case 'c': /* command complete */
case 'C':
return complete_command(el, word, dolist);
case 'f': /* filename complete */
case 'F':
return complete_filename(el, word, dolist);
case 'm':
case 'M':
return complete_smopts(el, word, dolist);
case 'n': /* no complete */
case 'N': /* no complete */
return CC_ERROR;
case 's':
case 'S':
return complete_set(el, word, dolist);
#ifdef THREAD_SUPPORT
case 't':
case 'T':
return complete_thread_key(el, word, dolist);
#endif
case 'x': /* executable complete */
case 'X':
return complete_executable(el, word, dolist);
default:
warnx("unknown complete type `%c'", cmpltype);
#if 0
assert(/*CONSTCOND*/0);
#endif
return CC_ERROR;
}
/* NOTREACHED */
}
/*
* A generic file completion routine.
*/
static unsigned char
file_complete(EditLine *el, int ch)
{
static char word[LINESIZE];
const LineInfo *lf;
size_t word_len;
int dolist;
lf = el_line(el);
#ifdef EMACS_CTRL_D_BINDING_HACK
{
int cc_ret;
if ((cc_ret = emacs_ctrl_d(el, lf, ch)) != -1)
return cc_ret;
}
#endif /* EMACS_CTRL_D_BINDING_HACK */
word_len = lf->cursor - lf->buffer;
if (word_len + 1 > sizeof(word))
return CC_ERROR;
(void)strlcpy(word, lf->buffer, word_len + 1); /* do not use estrlcpy here! */
if ((dolist = get_dolist(lf)) == -1)
return CC_ERROR;
return complete_filename(el, word, dolist);
}
#ifdef MIME_SUPPORT
/*
* Complete mime_transfer_encoding type.
*/
static unsigned char
mime_enc_complete(EditLine *el, int ch)
{
static char word[LINESIZE];
StringList *words;
unsigned char rv;
const LineInfo *lf;
size_t word_len;
int dolist;
lf = el_line(el);
#ifdef EMACS_CTRL_D_BINDING_HACK
{
int cc_ret;
if ((cc_ret = emacs_ctrl_d(el, lf, ch)) != -1)
return cc_ret;
}
#endif /* EMACS_CTRL_D_BINDING_HACK */
word_len = lf->cursor - lf->buffer;
if (word_len >= sizeof(word) - 1)
return CC_ERROR;
words = mail_sl_init();
{
const char *ename;
const void *cookie;
cookie = NULL;
for (ename = mime_next_encoding_name(&cookie);
ename;
ename = mime_next_encoding_name(&cookie))
if (word_len == 0 ||
strncmp(lf->buffer, ename, word_len) == 0) {
char *cp;
cp = estrdup(ename);
mail_sl_add(words, cp);
}
}
(void)strlcpy(word, lf->buffer, word_len + 1);
if ((dolist = get_dolist(lf)) == -1)
return CC_ERROR;
rv = complete_ambiguous(el, word, dolist, words);
sl_free(words, 1);
return rv;
}
#endif /* MIME_SUPPORT */
/*************************************************************************
* Our public interface to el_gets():
*
* init_editline()
* Initializes of all editline and completion data strutures.
*
* my_gets()
* Returns the next line of input as a NULL termnated string without
* the trailing newline.
*
* my_getline()
* Same as my_gets(), but strips leading and trailing whitespace
* and returns an empty line if it gets a SIGINT.
*/
static const char *el_prompt;
/*ARGSUSED*/
static const char *
show_prompt(EditLine *e __unused)
{
return el_prompt;
}
PUBLIC char *
my_gets(el_mode_t *em, const char *prompt, char *string)
{
int cnt;
size_t len;
const char *buf;
HistEvent ev;
static char line[LINE_MAX];
el_prompt = prompt;
if (string)
el_push(em->el, string);
buf = el_gets(em->el, &cnt);
if (buf == NULL || cnt <= 0) {
if (cnt == 0)
(void)putc('\n', stdout);
return NULL;
}
if (buf[cnt - 1] == '\n')
cnt--; /* trash the trailing LF */
len = MIN(sizeof(line) - 1, cnt);
(void)memcpy(line, buf, len);
line[cnt] = '\0';
/* enter non-empty lines into history */
if (em->hist) {
const char *p;
p = skip_WSP(line);
if (*p && history(em->hist, &ev, H_ENTER, line) == 0)
(void)printf("Failed history entry: %s", line);
}
return line;
}
#ifdef MIME_SUPPORT
/* XXX - do we really want this here? */
static jmp_buf intjmp;
/*ARGSUSED*/
static void
sigint(int signum __unused)
{
siglongjmp(intjmp, 1);
}
PUBLIC char *
my_getline(el_mode_t *em, const char *prompt, const char *str)
{
sig_t saveint;
char *cp;
char *line;
saveint = signal(SIGINT, sigint);
if (sigsetjmp(intjmp, 1)) {
(void)signal(SIGINT, saveint);
(void)putc('\n', stdout);
return __UNCONST("");
}
line = my_gets(em, prompt, __UNCONST(str));
/* LINTED */
line = line ? savestr(line) : __UNCONST("");
(void)signal(SIGINT, saveint);
/* strip trailing white space */
for (cp = line + strlen(line) - 1;
cp >= line && is_WSP(*cp); cp--)
*cp = '\0';
/* skip leading white space */
cp = skip_WSP(line);
return cp;
}
#endif /* MIME_SUPPORT */
static el_mode_t
init_el_mode(
const char *el_editor,
unsigned char (*completer)(EditLine *, int),
struct name *keys,
int history_size)
{
el_mode_t em;
(void)memset(&em, 0, sizeof(em));
if ((em.el = el_init(getprogname(), stdin, stdout, stderr)) == NULL) {
warn("el_init");
return em;
}
(void)el_set(em.el, EL_PROMPT, show_prompt);
(void)el_set(em.el, EL_SIGNAL, 1); /* editline handles the signals. */
if (el_editor)
(void)el_set(em.el, EL_EDITOR, el_editor);
if (completer) {
struct name *np;
(void)el_set(em.el, EL_ADDFN, "mail-complete",
"Context sensitive argument completion", completer);
for (np = keys; np; np = np->n_flink)
(void)el_set(em.el, EL_BIND, np->n_name,
"mail-complete", NULL);
}
if (history_size) {
HistEvent ev;
if ((em.hist = history_init()) == NULL) {
warn("history_init");
return em;
}
if (history(em.hist, &ev, H_SETSIZE, history_size) == -1)
(void)printf("history: %s\n", ev.str);
(void)el_set(em.el, EL_HIST, history, em.hist);
}
(void)el_source(em.el, NULL); /* read ~/.editrc */
return em;
}
struct el_modes_s elm = {
.command = { .el = NULL, .hist = NULL, },
.string = { .el = NULL, .hist = NULL, },
.filec = { .el = NULL, .hist = NULL, },
#ifdef MIME_SUPPORT
.mime_enc = { .el = NULL, .hist = NULL, },
#endif
};
PUBLIC void
init_editline(void)
{
const char *mode;
int hist_size;
struct name *keys;
char *cp;
mode = value(ENAME_EL_EDITOR);
cp = value(ENAME_EL_HISTORY_SIZE);
hist_size = cp ? atoi(cp) : 0;
cp = value(ENAME_EL_COMPLETION_KEYS);
keys = cp && *cp ? lexpand(cp, 0) : NULL;
elm.command = init_el_mode(mode, mail_complete, keys, hist_size);
elm.filec = init_el_mode(mode, file_complete, keys, 0);
elm.string = init_el_mode(mode, NULL, NULL, 0);
#ifdef MIME_SUPPORT
elm.mime_enc = init_el_mode(mode, mime_enc_complete, keys, 0);
#endif
return;
}
#endif /* USE_EDITLINE */