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add DB's pverhaul the tab completion code and a few related functions to 

increase efficiency and support multibyte characters; also add a few
miscellaneous tweaks of mine


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2309 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
master
David Lawrence Ramsey 2005-02-08 20:37:53 +00:00
parent daa533a767
commit 65e6ecb1d4
8 changed files with 328 additions and 500 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
ChangeLog
View File

@ -149,6 +149,15 @@ CVS code -
get the value of totsize in a few more places. Changes to
read_line(), read_file(), do_delete(), do_input(),
get_totals(), and do_cursorpos(). (DLR)
- Overhaul the tab completion code and a few related functions
to increase efficiency and support multibyte characters. New
functions strrchrn() and is_dir(); changes to diralphasort(),
username_tab_completion(), cwd_tab_completion(), input_tab(),
tail(), and striponedir(); removal of append_slash_if_dir()
and check_wildcard_match(). (David Benbennick) DLR: Move the
routine to get the current user's home directory into the new
function get_homedir(), and use it where necessary. Also add
a few miscellaneous tweaks.
- cut.c:
do_cut_text()
- If keep_cutbuffer is FALSE, only blow away the text in the

31
src/chars.c
View File

@ -41,13 +41,13 @@
/* Return TRUE if the value of c is in byte range, and FALSE
* otherwise. */
bool is_byte(unsigned int c)
bool is_byte(int c)
{
return (c == (unsigned char)c);
return ((unsigned int)c == (unsigned char)c);
}
/* This function is equivalent to isalnum(). */
bool is_alnum_char(unsigned int c)
bool is_alnum_char(int c)
{
return isalnum(c);
}
@ -82,7 +82,7 @@ bool is_alnum_wchar(wchar_t wc)
#endif
/* This function is equivalent to isblank(). */
bool is_blank_char(unsigned int c)
bool is_blank_char(int c)
{
return
#ifdef HAVE_ISBLANK
@ -130,9 +130,10 @@ bool is_blank_wchar(wchar_t wc)
/* This function is equivalent to iscntrl(), except in that it also
* handles control characters with their high bits set. */
bool is_cntrl_char(unsigned int c)
bool is_cntrl_char(int c)
{
return (0 <= c && c < 32) || (127 <= c && c < 160);
return (-128 <= c && c < -96) || (0 <= c && c < 32) ||
(127 <= c && c < 160);
}
/* This function is equivalent to iscntrl() for multibyte characters,
@ -273,7 +274,7 @@ int mb_cur_max(void)
/* Convert the value in chr to a multibyte character with the same
* wide character value as chr. Return the multibyte character and its
* length. */
char *make_mbchar(unsigned int chr, char *chr_mb, int *chr_mb_len)
char *make_mbchar(int chr, char *chr_mb, int *chr_mb_len)
{
assert(chr_mb != NULL && chr_mb_len != NULL);
@ -412,7 +413,7 @@ size_t move_mbleft(const char *buf, size_t pos)
#endif
, NULL);
if (pos_prev <= buf_mb_len)
if (pos_prev <= (size_t)buf_mb_len)
break;
pos_prev -= buf_mb_len;
@ -760,3 +761,17 @@ size_t mbstrnlen(const char *s, size_t maxlen)
nstrnlen(s, maxlen);
#endif
}
/* Find the one-based position of the last occurrence of character c in
* the first n characters of s. Return 0 if c is not found. */
size_t strrchrn(const char *s, int c, size_t n)
{
assert(n <= strlen(s));
for (s += n - 1; n >= 1; n--, s--) {
if (c == *s)
return n;
}
return 0;
}

609
src/files.c
View File

@ -1911,6 +1911,7 @@ int do_writeout(bool exiting)
} /* while (TRUE) */
free(ans);
return retval;
}
@ -1920,71 +1921,96 @@ void do_writeout_void(void)
display_main_list();
}
/* Return a malloc()ed string containing the actual directory, used
* to convert ~user and ~/ notation... */
/* Return a malloc()ed string containing the actual directory, used to
* convert ~user/ and ~/ notation. */
char *real_dir_from_tilde(const char *buf)
{
char *dirtmp = NULL;
if (buf == NULL)
return NULL;
if (buf[0] == '~') {
size_t i;
const struct passwd *userdata;
const char *tilde_dir;
/* Figure how how much of the str we need to compare */
/* Figure out how much of the str we need to compare. */
for (i = 1; buf[i] != '/' && buf[i] != '\0'; i++)
;
/* Determine home directory using getpwuid() or getpwent(),
don't rely on $HOME */
if (i == 1)
userdata = getpwuid(geteuid());
else {
/* Get the home directory. */
if (i == 1) {
get_homedir();
tilde_dir = homedir;
} else {
const struct passwd *userdata;
do {
userdata = getpwent();
} while (userdata != NULL &&
strncmp(userdata->pw_name, buf + 1, i - 1) != 0);
endpwent();
tilde_dir = userdata->pw_dir;
}
endpwent();
if (userdata != NULL) { /* User found */
dirtmp = charalloc(strlen(userdata->pw_dir) +
strlen(buf + i) + 1);
sprintf(dirtmp, "%s%s", userdata->pw_dir, &buf[i]);
if (tilde_dir != NULL) {
dirtmp = charalloc(strlen(tilde_dir) + strlen(buf + i) + 1);
sprintf(dirtmp, "%s%s", tilde_dir, buf + i);
}
}
/* Set a default value for dirtmp, in case the user's home directory
* isn't found. */
if (dirtmp == NULL)
dirtmp = mallocstrcpy(dirtmp, buf);
dirtmp = mallocstrcpy(NULL, buf);
return dirtmp;
}
#if !defined(DISABLE_TABCOMP) || !defined(DISABLE_BROWSER)
/* Our sort routine for file listings. Sort directories before
* filenames, alphabetically and ignoring case differences. Sort
* filenames the same way, except for ignoring an initial dot. */
int diralphasort(const void *va, const void *vb)
{
struct stat fileinfo;
const char *a = *(const char *const *)va;
const char *b = *(const char *const *)vb;
bool aisdir = stat(a, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode);
bool bisdir = stat(b, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode);
if (aisdir && !bisdir)
return -1;
if (!aisdir && bisdir)
return 1;
if (*a == '.')
a++;
if (*b == '.')
b++;
return strcasecmp(a, b);
}
#endif
#ifndef DISABLE_TABCOMP
/* Tack a slash onto the string we're completing if it's a directory.
* We assume there is room for one more character on the end of buf.
* The return value says whether buf is a directory. */
int append_slash_if_dir(char *buf, bool *lastwastab, int *place)
/* Is the given file a directory? */
int is_dir(const char *buf)
{
char *dirptr = real_dir_from_tilde(buf);
struct stat fileinfo;
int ret = 0;
assert(dirptr != buf);
int ret = (stat(dirptr, &fileinfo) != -1 &&
S_ISDIR(fileinfo.st_mode));
if (stat(dirptr, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode)) {
strncat(buf, "/", 1);
(*place)++;
/* now we start over again with # of tabs so far */
*lastwastab = FALSE;
ret = 1;
}
assert(buf != NULL && dirptr != buf);
free(dirptr);
return ret;
}
/*
* These functions (username_tab_completion(), cwd_tab_completion(), and
/* These functions (username_tab_completion(), cwd_tab_completion(), and
* input_tab()) were taken from busybox 0.46 (cmdedit.c). Here is the
* notice from that file:
*
@ -1999,46 +2025,38 @@ int append_slash_if_dir(char *buf, bool *lastwastab, int *place)
* You may use this code as you wish, so long as the original author(s)
* are attributed in any redistributions of the source code.
* This code is 'as is' with no warranty.
* This code may safely be consumed by a BSD or GPL license.
*/
* This code may safely be consumed by a BSD or GPL license. */
char **username_tab_completion(char *buf, int *num_matches)
/* We consider the first buflen characters of buf for ~username tab
* completion. */
char **username_tab_completion(const char *buf, size_t *num_matches,
size_t buflen)
{
char **matches = (char **)NULL;
char *matchline = NULL;
struct passwd *userdata;
char **matches = NULL;
const struct passwd *userdata;
assert(buf != NULL && num_matches != NULL && buflen > 0);
*num_matches = 0;
matches = (char **)nmalloc(BUFSIZ * sizeof(char *));
strcat(buf, "*");
while ((userdata = getpwent()) != NULL) {
if (check_wildcard_match(userdata->pw_name, &buf[1])) {
/* Cool, found a match. Add it to the list
* This makes a lot more sense to me (Chris) this way...
*/
if (strncmp(userdata->pw_name, buf + 1, buflen - 1) == 0) {
/* Cool, found a match. Add it to the list. This makes a
* lot more sense to me (Chris) this way... */
#ifndef DISABLE_OPERATINGDIR
/* ...unless the match exists outside the operating
directory, in which case just go to the next match */
if (operating_dir != NULL) {
if (check_operating_dir(userdata->pw_dir, TRUE) != 0)
continue;
}
* directory, in which case just go to the next match. */
if (check_operating_dir(userdata->pw_dir, TRUE))
continue;
#endif
matchline = charalloc(strlen(userdata->pw_name) + 2);
sprintf(matchline, "~%s", userdata->pw_name);
matches[*num_matches] = matchline;
matches = (char **)nrealloc(matches, (*num_matches + 1) *
sizeof(char *));
matches[*num_matches] =
charalloc(strlen(userdata->pw_name) + 2);
sprintf(matches[*num_matches], "~%s", userdata->pw_name);
++(*num_matches);
/* If there's no more room, bail out */
if (*num_matches == BUFSIZ)
break;
}
}
endpwent();
@ -2047,365 +2065,271 @@ char **username_tab_completion(char *buf, int *num_matches)
}
/* This was originally called exe_n_cwd_tab_completion, but we're not
worried about executables, only filenames :> */
char **cwd_tab_completion(char *buf, int *num_matches)
* worried about executables, only filenames :> */
char **cwd_tab_completion(const char *buf, size_t *num_matches, size_t
buflen)
{
char *dirname, *dirtmp = NULL, *tmp = NULL, *tmp2 = NULL;
char **matches = (char **)NULL;
char *dirname = mallocstrcpy(NULL, buf);
char *filename;
#ifndef DISABLE_OPERATINGDIR
size_t dirnamelen;
#endif
size_t filenamelen;
char **matches = NULL;
DIR *dir;
struct dirent *next;
const struct dirent *next;
matches = (char **)nmalloc(BUFSIZ * sizeof(char *));
assert(dirname != NULL && num_matches != NULL && buflen >= 0);
/* Stick a wildcard onto the buf, for later use */
strcat(buf, "*");
*num_matches = 0;
null_at(&dirname, buflen);
/* Okie, if there's a / in the buffer, strip out the directory part */
if (buf[0] != '\0' && strstr(buf, "/") != NULL) {
dirname = charalloc(strlen(buf) + 1);
tmp = buf + strlen(buf);
while (*tmp != '/' && tmp != buf)
tmp--;
tmp++;
strncpy(dirname, buf, tmp - buf + 1);
dirname[tmp - buf] = '\0';
/* Okie, if there's a / in the buffer, strip out the directory
* part. */
filename = strrchr(dirname, '/');
if (filename != NULL) {
char *tmpdirname = filename + 1;
filename = mallocstrcpy(NULL, tmpdirname);
*tmpdirname = '\0';
tmpdirname = dirname;
dirname = real_dir_from_tilde(dirname);
free(tmpdirname);
} else {
if ((dirname = getcwd(NULL, PATH_MAX + 1)) == NULL)
return matches;
else
tmp = buf;
filename = dirname;
dirname = mallocstrcpy(NULL, "./");
}
#ifdef DEBUG
fprintf(stderr, "\nDir = %s\n", dirname);
fprintf(stderr, "\nbuf = %s\n", buf);
fprintf(stderr, "\ntmp = %s\n", tmp);
#endif
dirtmp = real_dir_from_tilde(dirname);
free(dirname);
dirname = dirtmp;
#ifdef DEBUG
fprintf(stderr, "\nDir = %s\n", dirname);
fprintf(stderr, "\nbuf = %s\n", buf);
fprintf(stderr, "\ntmp = %s\n", tmp);
#endif
assert(dirname[strlen(dirname) - 1] == '/');
dir = opendir(dirname);
if (dir == NULL) {
/* Don't print an error, just shut up and return */
*num_matches = 0;
/* Don't print an error, just shut up and return. */
beep();
return matches;
free(filename);
free(dirname);
return NULL;
}
#ifndef DISABLE_OPERATINGDIR
dirnamelen = strlen(dirname);
#endif
filenamelen = strlen(filename);
while ((next = readdir(dir)) != NULL) {
#ifdef DEBUG
fprintf(stderr, "Comparing \'%s\'\n", next->d_name);
#endif
/* See if this matches */
if (check_wildcard_match(next->d_name, tmp)) {
/* Cool, found a match. Add it to the list
* This makes a lot more sense to me (Chris) this way...
*/
/* See if this matches. */
if (strncmp(next->d_name, filename, filenamelen) == 0 &&
(*filename == '.' || (strcmp(next->d_name, ".") != 0 &&
strcmp(next->d_name, "..") != 0))) {
/* Cool, found a match. Add it to the list. This makes a
* lot more sense to me (Chris) this way... */
#ifndef DISABLE_OPERATINGDIR
/* ...unless the match exists outside the operating
directory, in which case just go to the next match; to
properly do operating directory checking, we have to add the
directory name to the beginning of the proposed match
before we check it */
* directory, in which case just go to the next match. To
* properly do operating directory checking, we have to add
* the directory name to the beginning of the proposed match
* before we check it. */
char *tmp2 = charalloc(strlen(dirname) +
strlen(next->d_name) + 1);
if (operating_dir != NULL) {
tmp2 = charalloc(strlen(dirname) + strlen(next->d_name) + 2);
strcpy(tmp2, dirname);
strcat(tmp2, "/");
strcat(tmp2, next->d_name);
if (check_operating_dir(tmp2, TRUE) != 0) {
free(tmp2);
continue;
}
free(tmp2);
sprintf(tmp2, "%s%s", dirname, next->d_name);
if (check_operating_dir(tmp2, TRUE)) {
free(tmp2);
continue;
}
free(tmp2);
#endif
tmp2 = NULL;
tmp2 = charalloc(strlen(next->d_name) + 1);
strcpy(tmp2, next->d_name);
matches[*num_matches] = tmp2;
++*num_matches;
/* If there's no more room, bail out */
if (*num_matches == BUFSIZ)
break;
matches = (char **)nrealloc(matches, (*num_matches + 1) *
sizeof(char *));
matches[*num_matches] = mallocstrcpy(NULL, next->d_name);
++(*num_matches);
}
}
closedir(dir);
free(dirname);
free(filename);
return matches;
}
/* This function now has an arg which refers to how much the statusbar
* (place) should be advanced, i.e. the new cursor pos. */
char *input_tab(char *buf, int place, bool *lastwastab, int *newplace,
bool *list)
/* Do tab completion. This function now has an arg which refers to how
* much the statusbar cursor position (place) should be advanced. */
char *input_tab(char *buf, size_t *place, bool *lastwastab, bool *list)
{
/* Do TAB completion */
static int num_matches = 0, match_matches = 0;
static char **matches = (char **)NULL;
int pos = place, i = 0, col = 0, editline = 0;
int longestname = 0, is_dir = 0;
char *foo;
size_t num_matches = 0;
char **matches = NULL;
*list = FALSE;
assert(buf != NULL && place != NULL && *place <= strlen(buf) && lastwastab != NULL && list != NULL);
if (*lastwastab == FALSE) {
char *tmp, *copyto, *matchbuf;
*list = 0;
*lastwastab = TRUE;
/* If the word starts with `~' and there is no slash in the word,
* then try completing this word as a username. */
if (*place > 0 && *buf == '~') {
const char *bob = strchr(buf, '/');
/* Make a local copy of the string -- up to the position of the
cursor */
matchbuf = charalloc(strlen(buf) + 2);
memset(matchbuf, '\0', strlen(buf) + 2);
if (bob == NULL || bob >= buf + *place)
matches = username_tab_completion(buf, &num_matches,
*place);
}
strncpy(matchbuf, buf, place);
tmp = matchbuf;
/* Match against files relative to the current working directory. */
if (matches == NULL)
matches = cwd_tab_completion(buf, &num_matches, *place);
/* skip any leading white space */
while (*tmp && is_blank_char(*tmp))
++tmp;
if (num_matches <= 0)
beep();
else {
size_t match, common_len = 0;
size_t lastslash = strrchrn(buf, '/', *place);
/* Ignore the first match_strip characters of matches
* entries. The entries of matches are tilde expanded. */
char *mzero;
/* Free up any memory already allocated */
if (matches != NULL) {
for (i = i; i < num_matches; i++)
free(matches[i]);
free(matches);
matches = (char **)NULL;
num_matches = 0;
}
while (TRUE) {
for (match = 1; match < num_matches; match++) {
if (matches[0][common_len] !=
matches[match][common_len])
break;
}
/* If the word starts with `~' and there is no slash in the word,
* then try completing this word as a username. */
/* If the original string begins with a tilde, and the part
we're trying to tab-complete doesn't contain a slash, copy
the part we're tab-completing into buf, so tab completion
will result in buf's containing only the tab-completed
username. */
if (buf[0] == '~' && strchr(tmp, '/') == NULL) {
buf = mallocstrcpy(buf, tmp);
matches = username_tab_completion(tmp, &num_matches);
}
/* If we're in the middle of the original line, copy the string
only up to the cursor position into buf, so tab completion
will result in buf's containing only the tab-completed
path/filename. */
else if (strlen(buf) > strlen(tmp))
buf = mallocstrcpy(buf, tmp);
/* Try to match everything in the current working directory that
* matches. */
if (matches == NULL)
matches = cwd_tab_completion(tmp, &num_matches);
/* Don't leak memory */
free(matchbuf);
#ifdef DEBUG
fprintf(stderr, "%d matches found...\n", num_matches);
#endif
/* Did we find exactly one match? */
switch (num_matches) {
case 0:
blank_edit();
wrefresh(edit);
break;
case 1:
buf = charealloc(buf, strlen(buf) + strlen(matches[0]) + 1);
if (buf[0] != '\0' && strstr(buf, "/") != NULL) {
for (tmp = buf + strlen(buf); *tmp != '/' && tmp != buf;
tmp--);
tmp++;
} else
tmp = buf;
if (strcmp(tmp, matches[0]) == 0)
is_dir = append_slash_if_dir(buf, lastwastab, newplace);
if (is_dir != 0)
if (match < num_matches || matches[0][common_len] == '\0')
break;
copyto = tmp;
for (pos = 0; *tmp == matches[0][pos] &&
pos <= strlen(matches[0]); pos++)
tmp++;
common_len++;
}
/* write out the matched name */
strncpy(copyto, matches[0], strlen(matches[0]) + 1);
*newplace += strlen(matches[0]) - pos;
mzero = charalloc(lastslash + common_len + 1);
sprintf(mzero, "%.*s%.*s", lastslash, buf, common_len,
matches[0]);
/* if an exact match is typed in and Tab is pressed,
*newplace will now be negative; in that case, make it
zero, so that the cursor will stay where it is instead of
moving backward */
if (*newplace < 0)
*newplace = 0;
common_len += lastslash;
/* Is it a directory? */
append_slash_if_dir(buf, lastwastab, newplace);
assert(common_len >= *place);
break;
default:
/* Check to see if all matches share a beginning, and, if so,
tack it onto buf and then beep */
if (num_matches == 1 && is_dir(mzero)) {
mzero[common_len] = '/';
common_len++;
assert(common_len > *place);
}
if (buf[0] != '\0' && strstr(buf, "/") != NULL) {
for (tmp = buf + strlen(buf); *tmp != '/' && tmp != buf;
tmp--);
tmp++;
} else
tmp = buf;
if (num_matches > 1 && (common_len != *place ||
*lastwastab == FALSE))
beep();
for (pos = 0; *tmp == matches[0][pos] && *tmp != '\0' &&
pos <= strlen(matches[0]); pos++)
tmp++;
/* If there is more match to display on the statusbar, show it.
* We reset lastwastab to FALSE: it requires hitting Tab twice
* in succession with no statusbar changes to see a match
* list. */
if (common_len != *place) {
size_t buflen = strlen(buf);
while (TRUE) {
match_matches = 0;
*lastwastab = FALSE;
buf = charealloc(buf, common_len + buflen - *place + 1);
charmove(buf + common_len, buf + *place, buflen - *place + 1);
strncpy(buf, mzero, common_len);
*place = common_len;
} else if (*lastwastab == FALSE || num_matches < 2)
*lastwastab = TRUE;
else {
int longest_name = 0, editline = 0;
size_t columns;
for (i = 0; i < num_matches; i++) {
if (matches[i][pos] == 0)
break;
else if (matches[i][pos] == matches[0][pos])
match_matches++;
}
if (match_matches == num_matches &&
(i == num_matches || matches[i] != 0)) {
/* All the matches have the same character at pos+1,
so paste it into buf... */
buf = charealloc(buf, strlen(buf) + 2);
strncat(buf, matches[0] + pos, 1);
*newplace += 1;
pos++;
} else {
beep();
/* Now we show a list of the available choices. */
assert(num_matches > 1);
/* Sort the list. */
qsort(matches, num_matches, sizeof(char *), diralphasort);
for (match = 0; match < num_matches; match++) {
common_len = strnlenpt(matches[match], COLS - 1);
if (common_len > COLS - 1) {
longest_name = COLS - 1;
break;
}
if (common_len > longest_name)
longest_name = common_len;
}
}
} else {
/* Ok -- the last char was a TAB. Since they
* just hit TAB again, print a list of all the
* available choices... */
if (matches != NULL && num_matches > 1) {
/* Blank the edit window, and print the matches out there */
assert(longest_name <= COLS - 1);
/* Each column will be longest_name + 2 characters wide,
* i.e, two spaces between columns, except that there will
* be only one space after the last column. */
columns = (COLS + 1) / (longest_name + 2);
/* Blank the edit window, and print the matches out
* there. */
blank_edit();
wmove(edit, 0, 0);
editline = 0;
/* Disable el cursor. */
curs_set(0);
/* Figure out the length of the longest filename */
for (i = 0; i < num_matches; i++)
if (strlen(matches[i]) > longestname)
longestname = strlen(matches[i]);
for (match = 0; match < num_matches; match++) {
char *disp;
if (longestname > COLS - 1)
longestname = COLS - 1;
wmove(edit, editline, (longest_name + 2) *
(match % columns));
foo = charalloc(longestname + 5);
/* Print the list of matches */
for (i = 0, col = 0; i < num_matches; i++) {
/* make each filename shown be the same length as the
longest filename, with two spaces at the end */
snprintf(foo, longestname + 1, "%s", matches[i]);
while (strlen(foo) < longestname)
strcat(foo, " ");
strcat(foo, " ");
/* Disable el cursor */
curs_set(0);
/* now, put the match on the screen */
waddnstr(edit, foo, strlen(foo));
col += strlen(foo);
/* And if the next match isn't going to fit on the
line, move to the next one */
if (col > COLS - longestname && i + 1 < num_matches) {
editline++;
wmove(edit, editline, 0);
if (editline == editwinrows - 1) {
waddstr(edit, _("(more)"));
break;
}
col = 0;
if (match % columns == 0 && editline == editwinrows - 1
&& num_matches - match > columns) {
waddstr(edit, _("(more)"));
break;
}
disp = display_string(matches[match], 0, longest_name,
FALSE);
waddstr(edit, disp);
free(disp);
if ((match + 1) % columns == 0)
editline++;
}
free(foo);
wrefresh(edit);
*list = TRUE;
} else
beep();
}
free(mzero);
}
free_charptrarray(matches, num_matches);
/* Only refresh the edit window if we don't have a list of filename
matches on it */
* matches on it. */
if (*list == FALSE)
edit_refresh();
/* Enable el cursor. */
curs_set(1);
return buf;
}
#endif /* !DISABLE_TABCOMP */
/* Only print the last part of a path; isn't there a shell
* command for this? */
/* Only print the last part of a path. Isn't there a shell command for
* this? */
const char *tail(const char *foo)
{
const char *tmp = foo + strlen(foo);
const char *tmp = strrchr(foo, '/');
while (*tmp != '/' && tmp != foo)
tmp--;
if (*tmp == '/')
if (tmp == NULL)
tmp = foo;
else if (*tmp == '/')
tmp++;
return tmp;
}
#ifndef DISABLE_BROWSER
/* Our sort routine for file listings -- sort directories before
* files, and then alphabetically. */
int diralphasort(const void *va, const void *vb)
{
struct stat fileinfo;
const char *a = *(char *const *)va, *b = *(char *const *)vb;
int aisdir = stat(a, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode);
int bisdir = stat(b, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode);
if (aisdir != 0 && bisdir == 0)
return -1;
if (aisdir == 0 && bisdir != 0)
return 1;
return strcasecmp(a, b);
}
/* Free our malloc()ed memory */
/* Free our malloc()ed memory. */
void free_charptrarray(char **array, size_t len)
{
for (; len > 0; len--)
@ -2419,25 +2343,10 @@ void striponedir(char *foo)
char *tmp;
assert(foo != NULL);
/* Don't strip the root dir */
if (*foo == '\0' || strcmp(foo, "/") == 0)
return;
tmp = foo + strlen(foo) - 1;
assert(tmp >= foo);
if (*tmp == '/')
*tmp = '\0';
while (*tmp != '/' && tmp != foo)
tmp--;
if (tmp != foo)
*tmp = '\0';
else { /* SPK may need to make a 'default' path here */
if (*tmp != '/')
*tmp = '.';
*(tmp + 1) = '\0';
}
tmp = strrchr(foo, '/');
if (tmp != NULL)
*tmp = '\0';
}
int readable_dir(const char *path)
@ -2528,7 +2437,7 @@ char *do_browser(const char *inpath)
filelist = browser_init(path, &longest, &numents);
foo = charalloc(longest + 8);
/* Sort the list by directory first, then alphabetically */
/* Sort the list. */
qsort(filelist, numents, sizeof(char *), diralphasort);
titlebar(path);

2
src/global.c
View File

@ -183,9 +183,7 @@ bool curses_ended = FALSE; /* Indicates to statusbar() to simply
* write to stderr, since endwin() has
* ended curses mode. */
#ifdef ENABLE_NANORC
char *homedir = NULL; /* $HOME or from /etc/passwd. */
#endif
size_t length_of_list(const shortcut *s)
{

31
src/proto.h
View File

@ -144,25 +144,23 @@ extern historyheadtype replace_history;
extern bool curses_ended;
#ifdef ENABLE_NANORC
extern char *homedir;
#endif
/* Functions we want available. */
/* Public functions in chars.c. */
bool is_byte(unsigned int c);
bool is_alnum_char(unsigned int c);
bool is_byte(int c);
bool is_alnum_char(int c);
bool is_alnum_mbchar(const char *c);
#ifdef NANO_WIDE
bool is_alnum_wchar(wchar_t wc);
#endif
bool is_blank_char(unsigned int c);
bool is_blank_char(int c);
bool is_blank_mbchar(const char *c);
#ifdef NANO_WIDE
bool is_blank_wchar(wchar_t wc);
#endif
bool is_cntrl_char(unsigned int c);
bool is_cntrl_char(int c);
bool is_cntrl_mbchar(const char *c);
#ifdef NANO_WIDE
bool is_cntrl_wchar(wchar_t wc);
@ -174,7 +172,7 @@ wchar_t control_wrep(wchar_t c);
#endif
int mbwidth(const char *c);
int mb_cur_max(void);
char *make_mbchar(unsigned int chr, char *chr_mb, int *chr_mb_len);
char *make_mbchar(int chr, char *chr_mb, int *chr_mb_len);
int parse_mbchar(const char *buf, char *chr
#ifdef NANO_WIDE
, bool *bad_chr
@ -207,6 +205,7 @@ size_t mbstrlen(const char *s);
size_t nstrnlen(const char *s, size_t maxlen);
#endif
size_t mbstrnlen(const char *s, size_t maxlen);
size_t strrchrn(const char *s, int c, size_t n);
/* Public functions in color.c. */
#ifdef ENABLE_COLOR
@ -287,16 +286,18 @@ int write_marked(const char *name, bool tmp, int append);
int do_writeout(bool exiting);
void do_writeout_void(void);
char *real_dir_from_tilde(const char *buf);
#if !defined(DISABLE_TABCOMP) || !defined(DISABLE_BROWSER)
int diralphasort(const void *va, const void *vb);
#endif
#ifndef DISABLE_TABCOMP
int append_slash_if_dir(char *buf, bool *lastwastab, int *place);
char **username_tab_completion(char *buf, int *num_matches);
char **cwd_tab_completion(char *buf, int *num_matches);
char *input_tab(char *buf, int place, bool *lastwastab, int *newplace,
bool *list);
char **username_tab_completion(const char *buf, size_t *num_matches,
size_t buflen);
char **cwd_tab_completion(const char *buf, size_t *num_matches, size_t
buflen);
char *input_tab(char *buf, size_t *place, bool *lastwastab, bool *list);
#endif
const char *tail(const char *foo);
#ifndef DISABLE_BROWSER
int diralphasort(const void *va, const void *vb);
void free_charptrarray(char **array, size_t len);
void striponedir(char *foo);
int readable_dir(const char *path);
@ -531,6 +532,7 @@ int regexec_safe(const regex_t *preg, const char *string, size_t nmatch,
int regexp_bol_or_eol(const regex_t *preg, const char *string);
#endif
int num_of_digits(int n);
void get_homedir(void);
bool parse_num(const char *str, ssize_t *val);
void align(char **strp);
void null_at(char **data, size_t index);
@ -560,9 +562,6 @@ void mark_order(const filestruct **top, size_t *top_x, const filestruct
#endif
void get_totals(const filestruct *begin, const filestruct *end, int
*lines, size_t *size);
#ifndef DISABLE_TABCOMP
int check_wildcard_match(const char *text, const char *pattern);
#endif
/* Public functions in winio.c. */
#ifndef NANO_SMALL

14
src/rcfile.c
View File

@ -30,7 +30,6 @@
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <pwd.h>
#include <ctype.h>
#include <assert.h>
#include "proto.h"
@ -666,18 +665,7 @@ void do_rcfile(void)
lineno = 0;
{
const char *homenv = getenv("HOME");
/* Rely on $HOME, fall back on getpwuid() */
if (homenv == NULL) {
const struct passwd *userage = getpwuid(geteuid());
if (userage != NULL)
homenv = userage->pw_dir;
}
homedir = mallocstrcpy(NULL, homenv);
}
get_homedir();
if (homedir == NULL) {
rcfile_error(N_("I can't find my home directory! Wah!"));

120
src/utils.c
View File

@ -27,6 +27,7 @@
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <pwd.h>
#include <ctype.h>
#include <errno.h>
#include <assert.h>
@ -67,6 +68,23 @@ int num_of_digits(int n)
return i;
}
/* Return the user's home directory. We use $HOME, and if that fails,
* we fall back on getpwuid(). */
void get_homedir(void)
{
if (homedir == NULL) {
const char *homenv = getenv("HOME");
if (homenv == NULL) {
const struct passwd *userage = getpwuid(geteuid());
if (userage != NULL)
homenv = userage->pw_dir;
}
homedir = mallocstrcpy(NULL, homenv);
}
}
/* Read a ssize_t from str, and store it in *val (if val is not NULL).
* On error, we return FALSE and don't change *val. Otherwise, we
* return TRUE. */
@ -414,105 +432,3 @@ void get_totals(const filestruct *begin, const filestruct *end, int
}
}
}
#ifndef DISABLE_TABCOMP
/*
* Routine to see if a text string is matched by a wildcard pattern.
* Returns TRUE if the text is matched, or FALSE if it is not matched
* or if the pattern is invalid.
* * matches zero or more characters
* ? matches a single character
* [abc] matches 'a', 'b' or 'c'
* \c quotes character c
* Adapted from code written by Ingo Wilken, and
* then taken from sash, Copyright (c) 1999 by David I. Bell
* Permission is granted to use, distribute, or modify this source,
* provided that this copyright notice remains intact.
* Permission to distribute this code under the GPL has been granted.
*/
int check_wildcard_match(const char *text, const char *pattern)
{
const char *retrypat;
const char *retrytext;
int ch;
int found;
int len;
retrypat = NULL;
retrytext = NULL;
while (*text != '\0' || *pattern != '\0') {
ch = *pattern++;
switch (ch) {
case '*':
retrypat = pattern;
retrytext = text;
break;
case '[':
found = FALSE;
while ((ch = *pattern++) != ']') {
if (ch == '\\')
ch = *pattern++;
if (ch == '\0')
return FALSE;
if (*text == ch)
found = TRUE;
}
len = strlen(text);
if (!found && len != 0) {
return FALSE;
}
if (found) {
if (strlen(pattern) == 0 && len == 1) {
return TRUE;
}
if (len != 0) {
text++;
continue;
}
}
/* fall into next case */
case '?':
if (*text++ == '\0')
return FALSE;
break;
case '\\':
ch = *pattern++;
if (ch == '\0')
return FALSE;
/* fall into next case */
default:
if (*text == ch) {
if (*text != '\0')
text++;
break;
}
if (*text != '\0') {
pattern = retrypat;
text = ++retrytext;
break;
}
return FALSE;
}
if (pattern == NULL)
return FALSE;
}
return TRUE;
}
#endif

12
src/winio.c
View File

@ -2530,17 +2530,11 @@ int nanogetstr(bool allow_tabs, const char *buf, const char *def,
#endif
#ifndef DISABLE_TABCOMP
if (allow_tabs) {
int shift = 0;
answer = input_tab(answer, statusbar_x, &tabbed, &shift,
list);
statusbar_xend = strlen(answer);
statusbar_x += shift;
if (statusbar_x > statusbar_xend)
statusbar_x = statusbar_xend;
answer = input_tab(answer, &statusbar_x, &tabbed, list);
statusbar_xend = statusbar_x;
}
#endif
break;
#endif
case NANO_PREVLINE_KEY:
#ifndef NANO_SMALL
if (history_list != NULL) {