release/src/router/libncurses/test/railroad.c

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  28
  29 /*
  30  * Author: Thomas E. Dickey - 2000
  31  *
  32  * $Id: railroad.c,v 1.19 2009/10/24 21:37:56 tom Exp $
  33  *
  34  * A simple demo of the termcap interface.
  35  */
  36 #define USE_TINFO
  37 #include <test.priv.h>
  38
  39 #if HAVE_TGETENT
  40
  41 static char *wipeit;
  42 static char *moveit;
  43 static int length;
  44 static int height;
  45
  46 static char *finisC;
  47 static char *finisS;
  48 static char *finisU;
  49
  50 static char *startC;
  51 static char *startS;
  52 static char *startU;
  53
  54 static char *backup;
  55
  56 static bool interrupted = FALSE;
  57
  58 static int
  59 outc(TPUTS_ARG c)
  60 {
  61     int rc = OK;
  62
  63     if (interrupted) {
  64         char tmp = (char) c;
  65         if (write(STDOUT_FILENO, &tmp, 1) == -1)
  66             rc = ERR;
  67     } else {
  68         if (putc(c, stdout) == EOF)
  69             rc = ERR;
  70     }
  71     return rc;
  72 }
  73
  74 static void
  75 PutChar(int ch)
  76 {
  77     putchar(ch);
  78     fflush(stdout);
  79     napms(moveit ? 10 : 50);    /* not really termcap... */
  80 }
  81
  82 static void
  83 Backup(void)
  84 {
  85     tputs(backup != 0 ? backup : "\b", 1, outc);
  86 }
  87
  88 static void
  89 MyShowCursor(int flag)
  90 {
  91     if (startC != 0 && finisC != 0) {
  92         tputs(flag ? startC : finisC, 1, outc);
  93     }
  94 }
  95
  96 static void
  97 StandOut(int flag)
  98 {
  99     if (startS != 0 && finisS != 0) {
 100         tputs(flag ? startS : finisS, 1, outc);
 101     }
 102 }
 103
 104 static void
 105 Underline(int flag)
 106 {
 107     if (startU != 0 && finisU != 0) {
 108         tputs(flag ? startU : finisU, 1, outc);
 109     }
 110 }
 111
 112 static void
 113 ShowSign(char *string)
 114 {
 115     char *base = string;
 116     int ch, first, last;
 117
 118     if (moveit != 0) {
 119         tputs(tgoto(moveit, 0, height - 1), 1, outc);
 120         tputs(wipeit, 1, outc);
 121     }
 122
 123     while (*string != 0) {
 124         ch = *string;
 125         if (ch != ' ') {
 126             if (moveit != 0) {
 127                 for (first = length - 2; first >= (string - base); first--) {
 128                     if (first < length - 1) {
 129                         tputs(tgoto(moveit, first + 1, height - 1), 1, outc);
 130                         PutChar(' ');
 131                     }
 132                     tputs(tgoto(moveit, first, height - 1), 1, outc);
 133                     PutChar(ch);
 134                 }
 135             } else {
 136                 last = ch;
 137                 if (isalpha(ch)) {
 138                     first = isupper(ch) ? 'A' : 'a';
 139                 } else if (isdigit(ch)) {
 140                     first = '0';
 141                 } else {
 142                     first = ch;
 143                 }
 144                 if (first < last) {
 145                     Underline(1);
 146                     while (first < last) {
 147                         PutChar(first);
 148                         Backup();
 149                         first++;
 150                     }
 151                     Underline(0);
 152                 }
 153             }
 154             if (moveit != 0)
 155                 Backup();
 156         }
 157         StandOut(1);
 158         PutChar(ch);
 159         StandOut(0);
 160         fflush(stdout);
 161         string++;
 162     }
 163     if (moveit != 0)
 164         tputs(wipeit, 1, outc);
 165     putchar('\n');
 166 }
 167
 168 static void
 169 cleanup(void)
 170 {
 171     Underline(0);
 172     StandOut(0);
 173     MyShowCursor(1);
 174 }
 175
 176 static void
 177 onsig(int n GCC_UNUSED)
 178 {
 179     interrupted = TRUE;
 180     cleanup();
 181     ExitProgram(EXIT_FAILURE);
 182 }
 183
 184 static void
 185 railroad(char **args)
 186 {
 187     NCURSES_CONST char *name = getenv("TERM");
 188     char buffer[1024];
 189     char area[1024], *ap = area;
 190
 191     if (name == 0)
 192         name = "dumb";
 193     if (tgetent(buffer, name) >= 0) {
 194
 195         wipeit = tgetstr("ce", &ap);
 196         height = tgetnum("li");
 197         length = tgetnum("co");
 198         moveit = tgetstr("cm", &ap);
 199
 200         if (wipeit == 0
 201             || moveit == 0
 202             || height <= 0
 203             || length <= 0) {
 204             wipeit = 0;
 205             moveit = 0;
 206             height = 0;
 207             length = 0;
 208         }
 209
 210         startS = tgetstr("so", &ap);
 211         finisS = tgetstr("se", &ap);
 212
 213         startU = tgetstr("us", &ap);
 214         finisU = tgetstr("ue", &ap);
 215
 216         backup = tgetstr("le", &ap);
 217
 218         startC = tgetstr("ve", &ap);
 219         finisC = tgetstr("vi", &ap);
 220
 221         MyShowCursor(0);
 222
 223         CATCHALL(onsig);
 224
 225         while (*args) {
 226             ShowSign(*args++);
 227         }
 228         MyShowCursor(1);
 229     }
 230 }
 231
 232 int
 233 main(int argc, char *argv[])
 234 {
 235     if (argc > 1) {
 236         railroad(argv + 1);
 237     } else {
 238         static char world[] = "Hello World";
 239         static char *hello[] =
 240         {world, 0};
 241         railroad(hello);
 242     }
 243     ExitProgram(EXIT_SUCCESS);
 244 }
 245
 246 #else
 247 int
 248 main(int argc GCC_UNUSED,
 249      char *argv[]GCC_UNUSED)
 250 {
 251     printf("This program requires termcap\n");
 252     exit(EXIT_FAILURE);
 253 }
 254 #endif