auto-completion for paths when sending file & improved auto-complete algorithm to do partial matches

build/Makefile

@@ -22,7 +22,7 @@ CFLAGS += $(USER_CFLAGS)
 LDFLAGS = $(USER_LDFLAGS)
 
 OBJ = chat.o chat_commands.o configdir.o dns.o execute.o file_senders.o
-OBJ += friendlist.o global_commands.o groupchat.o line_info.o input.o help.o
+OBJ += friendlist.o global_commands.o groupchat.o line_info.o input.o help.o autocomplete.o
 OBJ += log.o misc_tools.o prompt.o settings.o toxic.o toxic_strings.o windows.o
 
 # Variables for audio support

src/autocomplete.c

@@ -0,0 +1,251 @@
+/*  autocomplete.c
+ *
+ *
+ *  Copyright (C) 2014 Toxic All Rights Reserved.
+ *
+ *  This file is part of Toxic.
+ *
+ *  Toxic is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Toxic is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Toxic.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef __APPLE__
+    #include <sys/types.h>
+    #include <sys/dir.h>
+#else
+    #include <dirent.h>
+#endif /* ifdef __APPLE__ */
+
+#include "windows.h"
+#include "toxic.h"
+#include "misc_tools.h"
+#include "line_info.h"
+#include "execute.h"
+
+/* puts match in match buffer. if more than one match, add first n chars that are identical.
+   e.g. if matches contains: [foo, foobar, foe] we put fo in matches. */
+static void get_str_match(char *match, char (*matches)[MAX_STR_SIZE], int n)
+{
+    if (n == 1) {
+        strcpy(match, matches[0]);
+        return;
+    }
+
+    int i;
+    int shortest = MAX_STR_SIZE;
+
+    for (i = 0; i < n; ++i) {
+        int m_len = strlen(matches[i]);
+
+        if (m_len < shortest)
+            shortest = m_len;
+    }
+
+    for (i = 0; i < shortest; ++i) {
+        char ch = matches[0][i];
+        int j;
+
+        for (j = 0; j < n; ++j) {
+            if (matches[j][i] != ch) {
+                strcpy(match, matches[0]);
+                match[i] = '\0';
+                return;
+            }
+        }
+    }
+
+    strcpy(match, matches[0]);
+}
+
+/* looks for the first instance in list that begins with the last entered word in line according to pos,
+   then fills line with the complete word. e.g. "Hello jo" would complete the line
+   with "Hello john". Works slightly differently for directory paths with the same results.
+
+   list is a pointer to the list of strings being compared, n_items is the number of items
+   in the list, and size is the size of each item in the list.
+
+   Returns the difference between the old len and new len of line on success, -1 if error */
+int complete_line(ChatContext *ctx, const void *list, int n_items, int size)
+{
+    if (ctx->pos <= 0 || ctx->len <= 0 || ctx->len >= MAX_STR_SIZE || size > MAX_STR_SIZE)
+        return -1;
+
+    const char *L = (char *) list;
+
+    bool dir_search = false;
+    const char *endchrs = " ";
+    char ubuf[MAX_STR_SIZE];
+
+    /* work with multibyte string copy of buf for simplicity */
+    if (wcs_to_mbs_buf(ubuf, ctx->line, sizeof(ubuf)) == -1)
+        return -1;
+
+    /* isolate substring from space behind pos to pos */
+    char tmp[MAX_STR_SIZE];
+    snprintf(tmp, sizeof(tmp), "%s", ubuf);
+    tmp[ctx->pos] = '\0';
+
+    const char *s = strrchr(tmp, ' ');
+    char *sub = malloc(strlen(ubuf) + 1);
+
+    if (sub == NULL)
+        exit_toxic_err("failed in complete_line", FATALERR_MEMORY);
+
+    if (!s) {
+        strcpy(sub, tmp);
+
+        if (sub[0] != '/')
+            endchrs = ": ";
+    } else {
+        strcpy(sub, &s[1]);
+
+        if (strncmp(ubuf, "/sendfile", strlen("/sendfile")) == 0) {
+            dir_search = true;
+            int sub_len = strlen(sub);
+            int si = char_rfind(sub, '/', sub_len);
+            memmove(sub, &sub[si + 1], sub_len - si);
+        }
+    }
+
+    if (string_is_empty(sub)) {
+        free(sub);
+        return -1;
+    }
+
+    int s_len = strlen(sub);
+    const char *str;
+    int n_matches = 0;
+    char matches[n_items][MAX_STR_SIZE];
+    int i = 0;
+
+    /* put all list matches in matches array */
+    for (i = 0; i < n_items; ++i) {
+        str = &L[i * size];
+
+        if (strncasecmp(str, sub, s_len) == 0)
+            strcpy(matches[n_matches++], str);
+    }
+
+    free(sub);
+
+    if (!n_matches)
+        return -1;
+
+    char match[size];
+    get_str_match(match, matches, n_matches);
+
+    if (dir_search) {
+        if (n_matches == 1)
+            endchrs = char_rfind(match, '.', strlen(match)) ? "\"" : "/";
+        else
+            endchrs = "";
+    } else if (n_matches > 1) {
+        endchrs = "";
+    }
+
+    /* put match in correct spot in buf and append endchars */
+    int n_endchrs = strlen(endchrs);
+    int m_len = strlen(match);
+    int strt = ctx->pos - s_len;
+    int diff = m_len - s_len + n_endchrs;
+
+    if (ctx->len + diff > MAX_STR_SIZE)
+        return -1;
+
+    char tmpend[MAX_STR_SIZE];
+    strcpy(tmpend, &ubuf[ctx->pos]);
+    strcpy(&ubuf[strt], match);
+    strcpy(&ubuf[strt + m_len], endchrs);
+    strcpy(&ubuf[strt + m_len + n_endchrs], tmpend);
+
+    /* convert to widechar and copy back to original buf */
+    wchar_t newbuf[MAX_STR_SIZE];
+
+    if (mbs_to_wcs_buf(newbuf, ubuf, MAX_STR_SIZE) == -1)
+        return -1;
+
+    wcscpy(ctx->line, newbuf);
+
+    ctx->len += diff;
+    ctx->pos += diff;
+
+    return diff;
+}
+
+/* matches /sendfile "<incomplete-dir>" line to matching directories.
+
+   if only one match, auto-complete line and return diff between old len and new len.
+   return 0 if > 1 match and print out all the matches
+   return -1 if no matches  */
+
+#define MAX_DIRS 256
+
+int dir_match(ToxWindow *self, Tox *m, const wchar_t *line)
+{
+    char b_path[MAX_STR_SIZE];
+    char b_name[MAX_STR_SIZE];
+
+    if (wcs_to_mbs_buf(b_path, line, sizeof(b_path)) == -1)
+        return -1;
+
+    int si = char_rfind(b_path, '/', strlen(b_path));
+
+    if (!b_path[0]) {    /* list everything in pwd */
+        strcpy(b_path, ".");  
+    } else if (!si && b_path[0] != '/') {    /* look for matches in pwd */
+        char tmp[MAX_STR_SIZE];
+        snprintf(tmp, sizeof(tmp), ".%s", b_path);
+        strcpy(b_path, tmp);  
+    }
+
+    strcpy(b_name, &b_path[si + 1]);
+    b_path[si + 1] = '\0';
+    int b_name_len = strlen(b_name);
+
+    DIR *dp = opendir(b_path);
+
+    if (dp == NULL)
+        return -1;
+
+    char dirnames[MAX_DIRS][NAME_MAX];
+    struct dirent *entry;
+    int dircount = 0;
+
+    while ((entry = readdir(dp)) && dircount < MAX_DIRS) {
+        if (strncmp(entry->d_name, b_name, b_name_len) == 0) {
+            snprintf(dirnames[dircount], sizeof(dirnames[dircount]), "%s", entry->d_name);
+            ++dircount;
+        }
+    }
+
+    if (dircount == 0)
+        return -1;
+
+    if (dircount > 1) {
+        execute(self->chatwin->history, self, m, "/clear", GLOBAL_COMMAND_MODE);
+
+        int i;
+
+        for (i = 0; i < dircount; ++i)
+            line_info_add(self, NULL, NULL, NULL, dirnames[i], SYS_MSG, 0, 0);
+
+        complete_line(self->chatwin, dirnames, dircount, NAME_MAX);
+        return 0;
+    }
+
+    return complete_line(self->chatwin, dirnames, dircount, NAME_MAX);
+}

src/autocomplete.h

@@ -0,0 +1,43 @@
+/*  autocomplete.h
+ *
+ *
+ *  Copyright (C) 2014 Toxic All Rights Reserved.
+ *
+ *  This file is part of Toxic.
+ *
+ *  Toxic is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Toxic is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Toxic.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _autocomplete_h
+#define _autocomplete_h
+
+/* looks for the first instance in list that begins with the last entered word in line according to pos,
+   then fills line with the complete word. e.g. "Hello jo" would complete the line
+   with "Hello john". Works slightly differently for directory paths with the same results.
+
+   list is a pointer to the list of strings being compared, n_items is the number of items
+   in the list, and size is the size of each item in the list.
+
+   Returns the difference between the old len and new len of line on success, -1 if error */
+int complete_line(ChatContext *ctx, const void *list, int n_items, int size);
+
+/* matches /sendfile "<incomplete-dir>" line to matching directories.
+
+   if only one match, auto-complete line and return diff between old len and new len.
+   return 0 if > 1 match and print out all the matches
+   return -1 if no matches  */
+int dir_match(ToxWindow *self, Tox *m, const wchar_t *line);
+
+#endif  /* #define _autocomplete_h */

src/chat.c

@@ -41,6 +41,7 @@
 #include "settings.h"
 #include "input.h"
 #include "help.h"
+#include "autocomplete.h"
 
 #ifdef _SUPPORT_AUDIO
 #include "audio_call.h"
@@ -685,21 +686,22 @@ static void chat_onKey(ToxWindow *self, Tox *m, wint_t key, bool ltr)
 
     input_handle(self, key, x, y, x2, y2);
 
-    if (key == '\t') {    /* TAB key: auto-completes command */
-        if (ctx->len > 1 && ctx->line[0] == '/') {
-            int diff = complete_line(ctx, chat_cmd_list, AC_NUM_CHAT_COMMANDS, MAX_CMDNAME_SIZE);
+    if (key == '\t' && ctx->len > 1 && ctx->line[0] == '/') {    /* TAB key: auto-complete */
+        int diff = -1;
+        int sf_len = 11;
 
-            if (diff != -1) {
-                if (x + diff > x2 - 1) {
-                    wmove(self->window, y, x + diff);
-                    ctx->start += diff;
-                } else {
-                    wmove(self->window, y, x + diff);
-                }
-            } else 
-                beep();
-        } else
+        if (wcsncmp(ctx->line, L"/sendfile \"", sf_len) == 0) {
+            diff = dir_match(self, m, &ctx->line[sf_len]);
+        } else {
+            diff = complete_line(ctx, chat_cmd_list, AC_NUM_CHAT_COMMANDS, MAX_CMDNAME_SIZE);
+        }
+
+        if (diff != -1) {
+            if (x + diff > x2 - 1)
+                ctx->start += diff;
+        } else {
             beep();
+        }
 
     } else if (key == '\n') {
         rm_trailing_spaces_buf(ctx);

src/dns.c

@@ -26,9 +26,9 @@
 #include <resolv.h>
 
 #ifdef __APPLE__
-#include <arpa/nameser_compat.h>
+    #include <arpa/nameser_compat.h>
 #else
-#include <arpa/nameser.h>
+    #include <arpa/nameser.h>
 #endif  /* ifdef __APPLE__ */
 
 #include <tox/toxdns.h>

src/groupchat.c

@@ -41,6 +41,7 @@
 #include "settings.h"
 #include "input.h"
 #include "help.h"
+#include "autocomplete.h"
 
 extern char *DATA_FILE;
 

src/misc_tools.c

@@ -25,6 +25,7 @@
 #include <string.h>
 #include <time.h>
 #include <limits.h>
+#include <dirent.h>
 
 #include "toxic.h"
 #include "windows.h"
@@ -247,7 +248,21 @@ int char_find(int idx, const char *s, char ch)
 {
     int i = idx;
 
-    for ( ; s[i]; ++i) {
+    for (i = idx; s[i]; ++i) {
+        if (s[i] == ch)
+            break;
+    }
+
+    return i;
+}
+
+/* returns index of the last instance of ch in s starting at len
+   returns 0 if char not found (skips 0th index) */
+int char_rfind(const char *s, char ch, int len)
+{
+    int i = 0;
+
+    for (i = len; i > 0; --i) {
         if (s[i] == ch)
             break;
     }

src/misc_tools.h

@@ -93,4 +93,8 @@ int get_nick_truncate(Tox *m, char *buf, int friendnum);
    returns length of s if char not found */
 int char_find(int idx, const char *s, char ch);
 
+/* returns index of the last instance of ch in s
+   returns 0 if char not found */
+int char_rfind(const char *s, char ch, int len);
+
 #endif /* #define _misc_tools_h */

src/prompt.c

@@ -39,6 +39,7 @@
 #include "settings.h"
 #include "input.h"
 #include "help.h"
+#include "autocomplete.h"
 
 char pending_frnd_requests[MAX_FRIENDS_NUM][TOX_CLIENT_ID_SIZE];
 uint16_t num_frnd_requests = 0;

src/toxic_strings.c

@@ -208,97 +208,3 @@ void fetch_hist_item(ChatContext *ctx, int key_dir)
     ctx->pos = h_len;
     ctx->len = h_len;
 }
-
-/* looks for the first instance in list that begins with the last entered word in line according to pos,
-   then fills line with the complete word. e.g. "Hello jo" would complete the line
-   with "Hello john".
-
-   list is a pointer to the list of strings being compared, n_items is the number of items
-   in the list, and size is the size of each item in the list.
-
-   Returns the difference between the old len and new len of line on success, -1 if error */
-int complete_line(ChatContext *ctx, const void *list, int n_items, int size)
-{
-    if (ctx->pos <= 0 || ctx->len <= 0 || ctx->len >= MAX_STR_SIZE)
-        return -1;
-
-    const char *L = (char *) list;
-
-    char ubuf[MAX_STR_SIZE];
-
-    /* work with multibyte string copy of buf for simplicity */
-    if (wcs_to_mbs_buf(ubuf, ctx->line, sizeof(ubuf)) == -1)
-        return -1;
-
-    /* isolate substring from space behind pos to pos */
-    char tmp[MAX_STR_SIZE];
-    snprintf(tmp, sizeof(tmp), "%s", ubuf);
-    tmp[ctx->pos] = '\0';
-    const char *s = strrchr(tmp, ' ');
-    int n_endchrs = 1;    /* 1 = append space to end of match, 2 = append ": " */
-
-    char *sub = malloc(strlen(ubuf) + 1);
-
-    if (sub == NULL)
-        exit_toxic_err("failed in complete_line", FATALERR_MEMORY);
-
-    if (!s) {
-        strcpy(sub, tmp);
-
-        if (sub[0] != '/')    /* make sure it's not a command */
-            n_endchrs = 2;
-    } else {
-        strcpy(sub, &s[1]);
-    }
-
-    if (string_is_empty(sub)) {
-        free(sub);
-        return -1;
-    }
-
-    int s_len = strlen(sub);
-    const char *match;
-    bool is_match = false;
-    int i;
-
-    /* look for a match in list */
-    for (i = 0; i < n_items; ++i) {
-        match = &L[i * size];
-
-        if ((is_match = strncasecmp(match, sub, s_len) == 0))
-            break;
-    }
-
-    free(sub);
-
-    if (!is_match)
-        return -1;
-
-    /* put match in correct spot in buf and append endchars (space or ": ") */
-    const char *endchrs = n_endchrs == 1 ? " " : ": ";
-    int m_len = strlen(match);
-    int strt = ctx->pos - s_len;
-    int diff = m_len - s_len + n_endchrs;
-
-    if (ctx->len + diff > MAX_STR_SIZE)
-        return -1;
-
-    char tmpend[MAX_STR_SIZE];
-    strcpy(tmpend, &ubuf[ctx->pos]);
-    strcpy(&ubuf[strt], match);
-    strcpy(&ubuf[strt + m_len], endchrs);
-    strcpy(&ubuf[strt + m_len + n_endchrs], tmpend);
-
-    /* convert to widechar and copy back to original buf */
-    wchar_t newbuf[MAX_STR_SIZE];
-
-    if (mbs_to_wcs_buf(newbuf, ubuf, MAX_STR_SIZE) == -1)
-        return -1;
-
-    wcscpy(ctx->line, newbuf);
-
-    ctx->len += diff;
-    ctx->pos += diff;
-
-    return diff;
-}

src/toxic_strings.h

@@ -52,16 +52,6 @@ int yank_buf(ChatContext *ctx);
 /* Removes trailing spaces from line. */
 void rm_trailing_spaces_buf(ChatContext *ctx);
 
-/* looks for the first instance in list that begins with the last entered word in line according to pos,
-   then fills line with the complete word. e.g. "Hello jo" would complete the line
-   with "Hello john".
-
-   list is a pointer to the list of strings being compared, n_items is the number of items
-   in the list, and size is the size of each item in the list.
-
-   Returns the difference between the old len and new len of line on success, -1 if error */
-int complete_line(ChatContext *ctx, const void *list, int n_items, int size);
-
 /* adds a line to the ln_history buffer at hst_pos and sets hst_pos to last history item. */
 void add_line_to_hist(ChatContext *ctx);