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