cmore.c

   1 /* depend: */
   2 /* cflags: */
   3 /* linker: cmd.o debug.o tui.o -lcurses */
   4 /* winlnk: cmd.o debug.o tui.o -lpdcurses */
   5
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <unistd.h>
   9
  10 #include "cmd.h"
  11 #include "debug.h"
  12 #include "tui.h"
  13
  14 /* static variables */
  15 char *progname = NULL;
  16 char *version = "0.1";
  17
  18 char *input = NULL;
  19 char *command = NULL;
  20 int second = 0;
  21
  22 void display (char **lines, int xmax, int ymax)
  23 {
  24     int stop = 0;
  25
  26 #ifdef __PDCURSES__
  27     statusmsg ("Press 'q' or escape to quit");
  28 #else
  29     statusmsg ("Press 'q' or double-escape to quit");
  30 #endif
  31
  32     int skip = 0;
  33     while (!stop) {
  34         clsbody ();
  35         int i = 0;
  36         int eol = 0;
  37         for (i = 0; i < ymax - 1; i++) {
  38             if (lines [skip + i] == NULL) {
  39                 break;
  40             }
  41             if (eol) {
  42                 bodymsg ("\n");
  43             }
  44             bodymsg (lines[skip + i]);
  45             eol = (lines[skip + i][xmax - 1 ] == '\0');
  46         }
  47         if (lines [skip + i] != NULL) {
  48             if (eol) {
  49                 bodymsg ("\n");
  50             }
  51             char *str = (char *) calloc (1, xmax + 1);
  52             strcpy (str, lines[skip + i]);
  53             if (str[xmax - 1] != '\0') {
  54                 VERBOSE (DEBUG, fprintf (stdout, "last line too long\n"));
  55                 strcpy (str + xmax - 3, ">>");
  56             }
  57             bodymsg (str);
  58             free (str);
  59         }
  60
  61         if (second > 0) {
  62             DoExit ();
  63             break;
  64         }
  65         int key = waitforkey ();
  66         VERBOSE (DEBUG, fprintf (stdout, "key pressed: 0x%04x (%c)\n", key, (key >= ' ') && (key < 256) ? key : '.'));
  67         switch (key) {
  68         case KEY_ESC:
  69 #ifndef __PDCURSES__
  70             key = waitforkey ();
  71             switch (key) {
  72             case KEY_ESC:
  73                 DoExit ();
  74                 /* fallthrough */
  75             case 'f':
  76             case 'h':
  77                 stop = 1;
  78                 break;
  79             }
  80             break;
  81 #endif
  82         case 'q':
  83             DoExit ();
  84             stop = 1;
  85             break;
  86         case 'i':
  87         case KEY_UP:
  88             skip = (skip > 0) ? skip - 1 : skip;
  89             break;
  90         case 'k':
  91         case KEY_DOWN:
  92             skip = (lines[skip + 1] != NULL) ? skip + 1 : skip;
  93             break;
  94 #ifdef __PDCURSES__
  95         case ALT_F:
  96         case ALT_H:
  97             stop = 1;
  98             break;
  99 #endif
 100         }
 101     }
 102
 103     rmstatus();
 104 }
 105
 106 void process (void)
 107 {
 108     static char **lines = NULL;
 109
 110     int xmax, ymax;
 111     WINDOW *wbody = bodywin ();
 112     getmaxyx (wbody, ymax, xmax);
 113
 114     char *buffer = (char *)-1;
 115     if (command) {
 116         buffer = exec_cmd (command);
 117     } else if (input) {
 118         buffer = load_file (input);
 119     } else if (!lines) {
 120         buffer = read_stdin ();
 121     }
 122
 123     if (buffer == NULL) {
 124         cleanup ();
 125         VERBOSE (ERROR, fprintf (stderr, "%s: %s\n", command ? "can't execute:" : input ? "can't load:" : "can't read", command ? command : input ? input : "stdin"));
 126         exit (1);
 127     }
 128
 129     if (!lines) {
 130         lines = split_lines (buffer, xmax);
 131         free (buffer);
 132     }
 133
 134     if (lines) {
 135         display (lines, xmax, ymax);
 136         if (command || buffer) {
 137             free_lines (lines);
 138             lines = NULL;
 139         }
 140     }
 141
 142     if (second > 0) {
 143         VERBOSE (DEBUG, fprintf (stdout, "sleeping for %d''\n", second));
 144         sleep (second);
 145         cleanup ();
 146         exit (0);
 147     }
 148 }
 149
 150 menu SubMenu0[] =
 151 {
 152     { "Refresh", process, "Refresh action"},
 153     { "Exit", DoExit, "Terminate program" },
 154     { "", (FUNC)0, "" }
 155 };
 156
 157 void sub0 (void)
 158 {
 159     domenu (SubMenu0);
 160 }
 161
 162 menu SubMenu1[] =
 163 {
 164     { "About", DoExit, "About..." },
 165     { "", (FUNC)0, "" }
 166 };
 167
 168 void sub1 (void)
 169 {
 170     domenu (SubMenu1);
 171 }
 172
 173 menu MainMenu[] =
 174 {
 175     { "File", sub0, "File menu" },
 176     { "Help", sub1, "Help menu" },
 177     { "", (FUNC)0, "" }   /* always add this as the last item! */
 178 };
 179
 180 /* help message */
 181 int usage (int ret)
 182 {
 183     FILE *fd = ret ? stderr : stdout;
 184     fprintf (fd, "usage: %s [-c command] [-f file] [-h] [-s sec] [-v]\n", progname);
 185     fprintf (fd, " -c: command\n");
 186     fprintf (fd, " -i: input file\n");
 187     fprintf (fd, " -h: help message\n");
 188     fprintf (fd, " -s: stoptime\n");
 189     fprintf (fd, " -v: verbose level (%d)\n", verbose);
 190
 191     return ret;
 192 }
 193
 194 /* main function */
 195 int main (int argc, char *argv[])
 196 {
 197
 198     /* get basename */
 199     char *pt = progname = argv[0];
 200     while (*pt) {
 201         if ((*pt == '/') || (*pt == '\\')) {
 202            progname = pt + 1;
 203         }
 204         pt++;
 205     }
 206
 207     /* process argument */
 208      while (argc-- > 1) {
 209         char *arg = *(++argv);
 210         if (arg[0] != '-') {
 211             VERBOSE (ERROR, fprintf (stderr, "%s: invalid option -- %s\n", progname, arg));
 212             return usage (1);
 213         }
 214         char c = arg[1];
 215         switch (c) {
 216         case 'c':
 217             arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
 218             if ((arg) && (command == NULL)) {
 219                 command = arg;
 220             } else {
 221                 VERBOSE (ERROR, fprintf (stderr, "%s: error for command '%s'\n", progname, arg));
 222                 return usage (1);
 223             }
 224             break;
 225         case 'f':
 226             arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
 227             if ((arg) && (input == NULL)) {
 228                 input = arg;
 229             } else {
 230                 VERBOSE (ERROR, fprintf (stderr, "%s: error for file '%s'\n", progname, arg));
 231                 return usage (1);
 232             }
 233             break;
 234         case 's':
 235             arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
 236             if (arg == NULL) {
 237                 VERBOSE (ERROR, fprintf (stderr, "%s: missing number of second\n", progname));
 238                 return usage (1);
 239             }
 240             second = atoi (arg);
 241             break;
 242         case 'v':
 243             arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL;
 244             if (arg == NULL) {
 245                 VERBOSE (ERROR, fprintf (stderr, "%s: missing verbose level\n", progname));
 246                 return usage (1);
 247             }
 248             verbose = atoi (arg);
 249             break;
 250         case 'h':
 251         default:
 252             return usage (c != 'h');
 253         }
 254     }
 255
 256     char titre[256] = {0};
 257     sprintf (titre, "Application: %s", command ? command : input ? input : "stdin");
 258
 259     startmenu (MainMenu, titre, process);
 260
 261     return 0;
 262 }
 263
 264 /* test: cmore.exe -c 2>&1 | grep error */
 265 /* test: cmore.exe -c notAnExistingCommand 2>&1 | grep can\'t */
 266 /* test: cmore.exe -f 2>&1 | grep error */
 267 /* test: cmore.exe -f notAnExistingFile 2>&1 | grep can\'t */
 268 /* test: cmore.exe -h | grep usage */
 269 /* test: cmore.exe -Z 2>&1 | grep usage */
 270 /* test: cmore.exe -v 2>&1 | grep missing */
 271 /* test: cmore.exe -s 2>&1 | grep missing */
 272 /* test: cmore.exe _ 2>&1 | grep invalid */
 273 /* test: cat tui.c | cmore.exe -v 5 -s 2*/
 274 /* test: (sleep 1; echo -n q) | cmore.exe -c 'ip addr' */
 275 /* test: (sleep 1; echo -ne '\e\e') | cmore.exe -f tui.c */
 276 /* test: (sleep 1; echo -n kkkkk; sleep 1; echo -n i; sleep 1; echo -n q) | cmore.exe -c 'ip addr' */
 277 /* test: (sleep 1; echo -n q) | cmore.exe -c 'echo -n a; for i in $(seq 1 '$(( $COLUMNS*($LINES-4)-2 ))'); do echo -n .; done; echo -n z' -v 5 | grep -q 'last line too long' */
 278 /* test: (sleep 1; echo -n q) | cmore.exe -c 'echo -n a; for i in $(seq 1 '$(( $COLUMNS*($LINES-4)-3 ))'); do echo -n .; done; echo -n z' -v 5 | grep -q 'last line too long'; test $? -eq 1 */
 279
 280 /* vim: set ts=4 sw=4 et: */