1 #include <stdio.h> 2 #include <string.h> 3 #include <signal.h> 4 #include <sys/wait.h> 5 #include <err.h> 6 #include <ctype.h> 7 #include <stdlib.h> 8 #include <unistd.h> 9 #include <dirent.h> 10 #include <limits.h> 11 #include <locale.h> 12 13 #include <histedit.h> 14 15 16 static int continuation; 17 volatile sig_atomic_t gotsig; 18 static const char hfile[] = ".whistory"; 19 20 static wchar_t * 21 prompt(EditLine *el) 22 { 23 static wchar_t a[] = L"\1\033[7m\1Edit$\1\033[0m\1 "; 24 static wchar_t b[] = L"Edit> "; 25 26 return continuation ? b : a; 27 } 28 29 30 static void 31 sig(int i) 32 { 33 gotsig = i; 34 } 35 36 const char * 37 my_wcstombs(const wchar_t *wstr) 38 { 39 static struct { 40 char *str; 41 int len; 42 } buf; 43 44 int needed = wcstombs(0, wstr, 0) + 1; 45 if (needed > buf.len) { 46 buf.str = malloc(needed); 47 buf.len = needed; 48 } 49 wcstombs(buf.str, wstr, needed); 50 buf.str[needed - 1] = 0; 51 52 return buf.str; 53 } 54 55 56 static unsigned char 57 complete(EditLine *el, int ch) 58 { 59 DIR *dd = opendir("."); 60 struct dirent *dp; 61 const wchar_t *ptr; 62 char *buf, *bptr; 63 const LineInfoW *lf = el_wline(el); 64 int len, mblen, i; 65 unsigned char res = 0; 66 wchar_t dir[1024]; 67 68 /* Find the last word */ 69 for (ptr = lf->cursor -1; !iswspace(*ptr) && ptr > lf->buffer; --ptr) 70 continue; 71 len = lf->cursor - ++ptr; 72 73 /* Convert last word to multibyte encoding, so we can compare to it */ 74 wctomb(NULL, 0); /* Reset shift state */ 75 mblen = MB_LEN_MAX * len + 1; 76 buf = bptr = malloc(mblen); 77 if (buf == NULL) 78 err(1, "malloc"); 79 for (i = 0; i < len; ++i) { 80 /* Note: really should test for -1 return from wctomb */ 81 bptr += wctomb(bptr, ptr[i]); 82 } 83 *bptr = 0; /* Terminate multibyte string */ 84 mblen = bptr - buf; 85 86 /* Scan directory for matching name */ 87 for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) { 88 if (mblen > strlen(dp->d_name)) 89 continue; 90 if (strncmp(dp->d_name, buf, mblen) == 0) { 91 mbstowcs(dir, &dp->d_name[mblen], 92 sizeof(dir) / sizeof(*dir)); 93 if (el_winsertstr(el, dir) == -1) 94 res = CC_ERROR; 95 else 96 res = CC_REFRESH; 97 break; 98 } 99 } 100 101 closedir(dd); 102 free(buf); 103 return res; 104 } 105 106 107 int 108 main(int argc, char *argv[]) 109 { 110 EditLine *el = NULL; 111 int numc, ncontinuation; 112 const wchar_t *line; 113 TokenizerW *tok; 114 HistoryW *hist; 115 HistEventW ev; 116 #ifdef DEBUG 117 int i; 118 #endif 119 120 setlocale(LC_ALL, ""); 121 122 (void)signal(SIGINT, sig); 123 (void)signal(SIGQUIT, sig); 124 (void)signal(SIGHUP, sig); 125 (void)signal(SIGTERM, sig); 126 127 hist = history_winit(); /* Init built-in history */ 128 history_w(hist, &ev, H_SETSIZE, 100); /* Remember 100 events */ 129 history_w(hist, &ev, H_LOAD, hfile); 130 131 tok = tok_winit(NULL); /* Init the tokenizer */ 132 133 el = el_init(argv[0], stdin, stdout, stderr); 134 135 el_wset(el, EL_EDITOR, L"vi"); /* Default editor is vi */ 136 el_wset(el, EL_SIGNAL, 1); /* Handle signals gracefully */ 137 el_wset(el, EL_PROMPT_ESC, prompt, '\1'); /* Set the prompt function */ 138 139 el_wset(el, EL_HIST, history_w, hist); /* FIXME - history_w? */ 140 141 /* Add a user-defined function */ 142 el_wset(el, EL_ADDFN, L"ed-complete", L"Complete argument", complete); 143 144 /* Bind <tab> to it */ 145 el_wset(el, EL_BIND, L"^I", L"ed-complete", NULL); 146 147 /* 148 * Bind j, k in vi command mode to previous and next line, instead 149 * of previous and next history. 150 */ 151 el_wset(el, EL_BIND, L"-a", L"k", L"ed-prev-line", NULL); 152 el_wset(el, EL_BIND, L"-a", L"j", L"ed-next-line", NULL); 153 154 /* Source the user's defaults file. */ 155 el_source(el, NULL); 156 157 while((line = el_wgets(el, &numc)) != NULL && numc != 0) { 158 int ac, cc, co, rc; 159 const wchar_t **av; 160 161 const LineInfoW *li; 162 li = el_wline(el); 163 164 #ifdef DEBUG 165 (void)fwprintf(stderr, L"==> got %d %ls", numc, line); 166 (void)fwprintf(stderr, L" > li `%.*ls_%.*ls'\n", 167 (li->cursor - li->buffer), li->buffer, 168 (li->lastchar - 1 - li->cursor), 169 (li->cursor >= li->lastchar) ? L"" : li->cursor); 170 #endif 171 172 if (gotsig) { 173 (void)fprintf(stderr, "Got signal %d.\n", gotsig); 174 gotsig = 0; 175 el_reset(el); 176 } 177 178 if(!continuation && numc == 1) 179 continue; /* Only got a linefeed */ 180 181 ac = cc = co = 0; 182 ncontinuation = tok_wline(tok, li, &ac, &av, &cc, &co); 183 if (ncontinuation < 0) { 184 (void) fprintf(stderr, "Internal error\n"); 185 continuation = 0; 186 continue; 187 } 188 189 #ifdef DEBUG 190 (void)fprintf(stderr, " > nc %d ac %d cc %d co %d\n", 191 ncontinuation, ac, cc, co); 192 #endif 193 history_w(hist, &ev, continuation ? H_APPEND : H_ENTER, line); 194 195 continuation = ncontinuation; 196 ncontinuation = 0; 197 if(continuation) 198 continue; 199 200 #ifdef DEBUG 201 for (i = 0; i < ac; ++i) { 202 (void)fwprintf(stderr, L" > arg# %2d ", i); 203 if (i != cc) 204 (void)fwprintf(stderr, L"`%ls'\n", av[i]); 205 else 206 (void)fwprintf(stderr, L"`%.*ls_%ls'\n", 207 co, av[i], av[i] + co); 208 } 209 #endif 210 211 if (wcscmp (av[0], L"history") == 0) { 212 switch(ac) { 213 case 1: 214 for(rc = history_w(hist, &ev, H_LAST); 215 rc != -1; 216 rc = history_w(hist, &ev, H_PREV)) 217 (void)fwprintf(stdout, L"%4d %ls", 218 ev.num, ev.str); 219 break; 220 case 2: 221 if (wcscmp(av[1], L"clear") == 0) 222 history_w(hist, &ev, H_CLEAR); 223 else 224 goto badhist; 225 break; 226 case 3: 227 if (wcscmp(av[1], L"load") == 0) 228 history_w(hist, &ev, H_LOAD, 229 my_wcstombs(av[2])); 230 else if (wcscmp(av[1], L"save") == 0) 231 history_w(hist, &ev, H_SAVE, 232 my_wcstombs(av[2])); 233 else 234 goto badhist; 235 break; 236 badhist: 237 default: 238 (void)fprintf(stderr, 239 "Bad history arguments\n"); 240 break; 241 } 242 } else if (el_wparse(el, ac, av) == -1) { 243 switch (fork()) { 244 case 0: { 245 Tokenizer *ntok = tok_init(NULL); 246 int nargc; 247 const char **nav; 248 tok_str(ntok, my_wcstombs(line), &nargc, &nav); 249 execvp(nav[0],(char **)nav); 250 perror(nav[0]); 251 _exit(1); 252 /* NOTREACHED */ 253 break; 254 } 255 case -1: 256 perror("fork"); 257 break; 258 default: 259 if (wait(&rc) == -1) 260 perror("wait"); 261 (void)fprintf(stderr, "Exit %x\n", rc); 262 break; 263 } 264 } 265 266 tok_wreset(tok); 267 } 268 269 el_end(el); 270 tok_wend(tok); 271 history_w(hist, &ev, H_SAVE, hfile); 272 history_wend(hist); 273 274 fprintf(stdout, "\n"); 275 return 0; 276 } 277 278 279
