These messages can be .rodata, so make them even more const.
[oweals/busybox.git] / cmdedit.c
index e317b86fa69149d5a3a9352bd938efd7b5267056..ce5450032eff30ccdf69d367134d65e013031fb0 100644 (file)
--- a/cmdedit.c
+++ b/cmdedit.c
@@ -31,8 +31,6 @@
  */
 
 
-//#define TEST
-
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
 #include <signal.h>
 #include <limits.h>
 
-#ifndef TEST
-
 #include "busybox.h"
 
+#ifdef BB_LOCALE_SUPPORT
+#define Isprint(c) isprint((c))
+#else
+#define Isprint(c) ( (c) >= ' ' && (c) != ((unsigned char)'\233') )
+#endif
+
+#ifndef TEST
+
 #define D(x)
 
 #else
 
 #define D(x)  x
 
-#ifndef TRUE
-#define TRUE  1
-#endif
-#ifndef FALSE
-#define FALSE 0
-#endif
-
 #endif                                                 /* TEST */
 
 #ifdef BB_FEATURE_COMMAND_TAB_COMPLETION
 #endif                                                 /* advanced FEATURES */
 
 
-#ifdef TEST
-void *xrealloc(void *old, size_t size)
-{
-       return realloc(old, size);
-}
-
-void *xmalloc(size_t size)
-{
-       return malloc(size);
-}
-char *xstrdup(const char *s)
-{
-       return strdup(s);
-}
-
-void *xcalloc(size_t size, size_t se)
-{
-       return calloc(size, se);
-}
-
-#define error_msg(s, d)                   fprintf(stderr, s, d)
-#endif /* TEST */
-
 
 struct history {
        char *s;
@@ -238,7 +212,7 @@ static void win_changed(int nsig)
 static void cmdedit_reset_term(void)
 {
        if ((handlers_sets & SET_RESET_TERM) != 0) {
-               /* sparc and other have broken termios support: use old termio handling. */
+/* sparc and other have broken termios support: use old termio handling. */
                setTermSettings(fileno(stdin), (void *) &initial_settings);
                handlers_sets &= ~SET_RESET_TERM;
        }
@@ -270,9 +244,9 @@ static void cmdedit_set_out_char(int next_char)
        int c = (int)((unsigned char) command_ps[cursor]);
 
        if (c == 0)
-               c = ' ';                                /* destroy end char? */
+               c = ' ';        /* destroy end char? */
 #ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
-       if (!isprint(c)) {                      /* Inverse put non-printable characters */
+       if (!Isprint(c)) {      /* Inverse put non-printable characters */
                if (c >= 128)
                        c -= 128;
                if (c < ' ')
@@ -328,7 +302,7 @@ static void input_backward(int num)
 {
        if (num > cursor)
                num = cursor;
-       cursor -= num;                          /* new cursor (in command, not terminal) */
+       cursor -= num;          /* new cursor (in command, not terminal) */
 
        if (cmdedit_x >= num) {         /* no to up line */
                cmdedit_x -= num;
@@ -369,134 +343,116 @@ static void parse_prompt(const char *prmt_ptr)
        put_prompt();
 }
 #else
-static void add_to_prompt(char **prmt_mem_ptr, int *alm, 
-               int *prmt_len, const char *addb)
-{
-       *prmt_len += strlen(addb);
-       if (*alm < (*prmt_len) + 1) {
-               *alm = (*prmt_len) + 1;
-               *prmt_mem_ptr = xrealloc(*prmt_mem_ptr, *alm);
-       }
-       strcat(*prmt_mem_ptr, addb);
-}
-
 static void parse_prompt(const char *prmt_ptr)
 {
-       int alm = strlen(prmt_ptr) + 1; /* supposedly require memory */
        int prmt_len = 0;
        int sub_len = 0;
-       int flg_not_length = '[';
-       char *prmt_mem_ptr = xstrdup(prmt_ptr);
-       char pwd_buf[PATH_MAX + 1];
-       char buf[16];
-       int c;
-
-       pwd_buf[0] = 0;
-       *prmt_mem_ptr = 0;
+       char  flg_not_length = '[';
+       char *prmt_mem_ptr = xcalloc(1, 1);
+       char *pwd_buf = xgetcwd(0);
+       char  buf2[PATH_MAX + 1];
+       char  buf[2];
+       char  c;
+       char *pbuf;
 
        while (*prmt_ptr) {
+               pbuf    = buf;
+               pbuf[1] = 0;
                c = *prmt_ptr++;
                if (c == '\\') {
-                       c = *prmt_ptr;
-                       if (c == 0)
+                       const char *cp = prmt_ptr;
+                       int l;
+                       
+                       c = process_escape_sequence(&prmt_ptr);
+                       if(prmt_ptr==cp) {
+                         if (*cp == 0)
                                break;
-                       prmt_ptr++;
-                       switch (c) {
+                         c = *prmt_ptr++;
+                         switch (c) {
 #ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR
-                       case 'u':
-                               add_to_prompt(&prmt_mem_ptr, &alm, &prmt_len, user_buf);
-                               continue;
+                         case 'u':
+                               pbuf = user_buf;
+                               break;
 #endif 
-                       case 'h':
-                               if (hostname_buf[0] == 0) {
-                                       hostname_buf = xcalloc(256, 1);
-                                       if (gethostname(hostname_buf, 255) < 0) {
-                                               strcpy(hostname_buf, "?");
+                         case 'h':
+                               pbuf = hostname_buf;
+                               if (*pbuf == 0) {
+                                       pbuf = xcalloc(256, 1);
+                                       if (gethostname(pbuf, 255) < 0) {
+                                               strcpy(pbuf, "?");
                                        } else {
-                                               char *s = strchr(hostname_buf, '.');
+                                               char *s = strchr(pbuf, '.');
 
                                                if (s)
                                                        *s = 0;
                                        }
+                                       hostname_buf = pbuf;
                                }
-                               add_to_prompt(&prmt_mem_ptr, &alm, &prmt_len,
-                                                         hostname_buf);
-                               continue;
-                       case '$':
+                               break;
+                         case '$':
                                c = my_euid == 0 ? '#' : '$';
                                break;
 #ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR
-                       case 'w':
-                               if (pwd_buf[0] == 0) {
-                                       int l;
-
-                                       getcwd(pwd_buf, PATH_MAX);
-                                       l = strlen(home_pwd_buf);
-                                       if (home_pwd_buf[0] != 0 &&
-                                               strncmp(home_pwd_buf, pwd_buf, l) == 0) {
-                                               strcpy(pwd_buf + 1, pwd_buf + l);
-                                               pwd_buf[0] = '~';
+                         case 'w':
+                               pbuf = pwd_buf;
+                               l = strlen(home_pwd_buf);
+                               if (home_pwd_buf[0] != 0 &&
+                                   strncmp(home_pwd_buf, pbuf, l) == 0 &&
+                                   (pbuf[l]=='/' || pbuf[l]=='\0') &&
+                                   strlen(pwd_buf+l)<PATH_MAX) {
+                                       pbuf = buf2;
+                                       *pbuf = '~';
+                                       strcpy(pbuf+1, pwd_buf+l);
                                        }
-                               }
-                               add_to_prompt(&prmt_mem_ptr, &alm, &prmt_len, pwd_buf);
-                               continue;
+                               break;
 #endif 
-                       case '!':
-                               snprintf(buf, sizeof(buf), "%d", num_ok_lines);
-                               add_to_prompt(&prmt_mem_ptr, &alm, &prmt_len, buf);
-                               continue;
-                       case 'e':
-                       case 'E':                       /* \e \E = \033 */
+                         case 'W':
+                               pbuf = pwd_buf;
+                               cp = strrchr(pbuf,'/');
+                               if ( (cp != NULL) && (cp != pbuf) )
+                                       pbuf += (cp-pbuf)+1;
+                               break;
+                         case '!':
+                               snprintf(pbuf = buf2, sizeof(buf2), "%d", num_ok_lines);
+                               break;
+                         case 'e': case 'E':     /* \e \E = \033 */
                                c = '\033';
                                break;
-                       case 'x':
-                       case 'X':
-                       case '0':
-                       case '1':
-                       case '2':
-                       case '3':
-                       case '4':
-                       case '5':
-                       case '6':
-                       case '7':{
-                               int l;
-                               int ho = 0;
-                               char *eho;
-
-                               if (c == 'X')
-                                       c = 'x';
-
+                         case 'x': case 'X': 
                                for (l = 0; l < 3;) {
-
-                                       buf[l++] = *prmt_ptr;
-                                       buf[l] = 0;
-                                       ho = strtol(buf, &eho, c == 'x' ? 16 : 8);
-                                       if (ho > UCHAR_MAX || (eho - buf) < l) {
+                                       int h;
+                                       buf2[l++] = *prmt_ptr;
+                                       buf2[l] = 0;
+                                       h = strtol(buf2, &pbuf, 16);
+                                       if (h > UCHAR_MAX || (pbuf - buf2) < l) {
                                                l--;
                                                break;
                                        }
                                        prmt_ptr++;
                                }
-                               buf[l] = 0;
-                               ho = strtol(buf, 0, c == 'x' ? 16 : 8);
-                               c = ho == 0 ? '?' : (char) ho;
+                               buf2[l] = 0;
+                               c = (char)strtol(buf2, 0, 16);
+                               if(c==0)
+                                       c = '?';
+                               pbuf = buf;
                                break;
-                       }
-                       case '[':
-                       case ']':
+                         case '[': case ']':
                                if (c == flg_not_length) {
                                        flg_not_length = flg_not_length == '[' ? ']' : '[';
                                        continue;
                                }
                                break;
-                       }
+                         }
+                       } 
                }
-               buf[0] = c;
-               buf[1] = 0;
-               add_to_prompt(&prmt_mem_ptr, &alm, &prmt_len, buf);
+               if(pbuf == buf)
+                       *pbuf = c;
+               prmt_len += strlen(pbuf);
+               prmt_mem_ptr = strcat(xrealloc(prmt_mem_ptr, prmt_len+1), pbuf);
                if (flg_not_length == ']')
                        sub_len++;
        }
+       free(pwd_buf);
        cmdedit_prompt = prmt_mem_ptr;
        cmdedit_prmt_len = prmt_len - sub_len;
        put_prompt();
@@ -776,7 +732,7 @@ static char **exe_n_cwd_tab_completion(char *command, int *num_matches,
        char **paths = path1;
        int npaths;
        int i;
-       char found[BUFSIZ + 4 + PATH_MAX];
+       char *found;
        char *pfind = strrchr(command, '/');
 
        path1[0] = ".";
@@ -809,7 +765,6 @@ static char **exe_n_cwd_tab_completion(char *command, int *num_matches,
                        continue;
 
                while ((next = readdir(dir)) != NULL) {
-                       const char *str_merge = "%s/%s";
                        char *str_found = next->d_name;
 
                        /* matched ? */
@@ -822,25 +777,23 @@ static char **exe_n_cwd_tab_completion(char *command, int *num_matches,
                                else
                                        continue;
                        }
-                       if (paths[i][strlen(paths[i]) - 1] == '/')
-                               str_merge = "%s%s";
-                       sprintf(found, str_merge, paths[i], str_found);
+                       found = concat_path_file(paths[i], str_found);
                        /* hmm, remover in progress? */
-                       if (stat(found, &st) < 0)
-                               continue;
+                       if (stat(found, &st) < 0) 
+                               goto cont;
                        /* find with dirs ? */
                        if (paths[i] != dirbuf)
                                strcpy(found, next->d_name);    /* only name */
                        if (S_ISDIR(st.st_mode)) {
                                /* name is directory      */
-                               /* algorithmic only "/" ? */
-                               if (*str_found)
-                                       strcat(found, "/");
+                               str_found = found;
+                               found = concat_path_file(found, "");
+                               free(str_found);
                                str_found = add_quote_for_spec_chars(found);
                        } else {
                                /* not put found file if search only dirs for cd */
-                               if (type == FIND_DIR_ONLY)
-                                       continue;
+                               if (type == FIND_DIR_ONLY) 
+                                       goto cont;
                                str_found = add_quote_for_spec_chars(found);
                                if (type == FIND_FILE_ONLY ||
                                        (type == FIND_EXE_ONLY && is_execute(&st) == TRUE))
@@ -850,6 +803,8 @@ static char **exe_n_cwd_tab_completion(char *command, int *num_matches,
                        matches = xrealloc(matches, (nm + 1) * sizeof(char *));
 
                        matches[nm++] = str_found;
+cont:
+                       free(found);
                }
                closedir(dir);
        }
@@ -1256,7 +1211,8 @@ extern void cmdedit_read_input(char *prompt, char command[BUFSIZ])
                fflush(stdout);                 /* buffered out to fast */
 
                if (read(inputFd, &c, 1) < 1)
-                       return;
+                       /* if we can't read input then exit */
+                       goto prepare_to_die;
 
                switch (c) {
                case '\n':
@@ -1288,6 +1244,7 @@ extern void cmdedit_read_input(char *prompt, char command[BUFSIZ])
                        /* Control-d -- Delete one character, or exit
                         * if the len=0 and no chars to delete */
                        if (len == 0) {
+prepare_to_die:
                                printf("exit");
                                clean_up_and_die(0);
                        } else {
@@ -1427,7 +1384,7 @@ extern void cmdedit_read_input(char *prompt, char command[BUFSIZ])
                                }
                        } else
 #endif
-                       if (!isprint(c))        /* Skip non-printable characters */
+                       if (!Isprint(c))        /* Skip non-printable characters */
                                break;
 
                        if (len >= (BUFSIZ - 2))        /* Need to leave space for enter */
@@ -1541,6 +1498,9 @@ extern void cmdedit_terminate(void)
 
 #ifdef TEST
 
+const char *applet_name = "debug stuff usage";
+const char *memory_exhausted = "Memory exhausted";
+
 #ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT
 #include <locale.h>
 #endif