/[pcre]/code/trunk/pcretest.c
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revision 286 by ph10, Tue Nov 20 10:05:23 2007 UTC revision 287 by ph10, Tue Dec 18 20:11:28 2007 UTC
# Line 48  POSSIBILITY OF SUCH DAMAGE. Line 48  POSSIBILITY OF SUCH DAMAGE.
48  #include <locale.h>  #include <locale.h>
49  #include <errno.h>  #include <errno.h>
50    
51    #ifdef SUPPORT_LIBREADLINE
52    #include <unistd.h>
53    #include <readline/readline.h>
54    #include <readline/history.h>
55    #endif
56    
57    
58  /* A number of things vary for Windows builds. Originally, pcretest opened its  /* A number of things vary for Windows builds. Originally, pcretest opened its
59  input and output without "b"; then I was told that "b" was needed in some  input and output without "b"; then I was told that "b" was needed in some
# Line 189  optimal way of handling this, but hey, t Line 195  optimal way of handling this, but hey, t
195  Arguments:  Arguments:
196    f            the file to read    f            the file to read
197    start        where in buffer to start (this *must* be within buffer)    start        where in buffer to start (this *must* be within buffer)
198      prompt       for stdin or readline()
199    
200  Returns:       pointer to the start of new data  Returns:       pointer to the start of new data
201                 could be a copy of start, or could be moved                 could be a copy of start, or could be moved
# Line 196  Returns: pointer to the start of n Line 203  Returns: pointer to the start of n
203  */  */
204    
205  static uschar *  static uschar *
206  extend_inputline(FILE *f, uschar *start)  extend_inputline(FILE *f, uschar *start, const char *prompt)
207  {  {
208  uschar *here = start;  uschar *here = start;
209    
# Line 207  for (;;) Line 214  for (;;)
214    if (rlen > 1000)    if (rlen > 1000)
215      {      {
216      int dlen;      int dlen;
217      if (fgets((char *)here, rlen,  f) == NULL)  
218        return (here == start)? NULL : start;      /* If libreadline support is required, use readline() to read a line if the
219        input is a terminal. Note that readline() removes the trailing newline, so
220        we must put it back again, to be compatible with fgets(). */
221    
222    #ifdef SUPPORT_LIBREADLINE
223        if (isatty(fileno(f)))
224          {
225          size_t len;
226          char *s = readline(prompt);
227          if (s == NULL) return (here == start)? NULL : start;
228          len = strlen(s);
229          if (len > 0) add_history(s);
230          if (len > rlen - 1) len = rlen - 1;
231          memcpy(here, s, len);
232          here[len] = '\n';
233          here[len+1] = 0;
234          free(s);
235          }
236        else
237    #endif
238    
239        /* Read the next line by normal means, prompting if the file is stdin. */
240    
241          {
242          if (f == stdin) printf(prompt);
243          if (fgets((char *)here, rlen,  f) == NULL)
244            return (here == start)? NULL : start;
245          }
246    
247      dlen = (int)strlen((char *)here);      dlen = (int)strlen((char *)here);
248      if (dlen > 0 && here[dlen - 1] == '\n') return start;      if (dlen > 0 && here[dlen - 1] == '\n') return start;
249      here += dlen;      here += dlen;
# Line 728  return 0; Line 763  return 0;
763  static void  static void
764  usage(void)  usage(void)
765  {  {
766  printf("Usage:     pcretest [options] [<input> [<output>]]\n");  printf("Usage:     pcretest [options] [<input file> [<output file>]]\n\n");
767    printf("Input and output default to stdin and stdout.\n");
768    #ifdef SUPPORT_LIBREADLINE
769    printf("If input is a terminal, readline() is used to read from it.\n");
770    #else
771    printf("This version of pcretest is not linked with readline().\n");
772    #endif
773    printf("\nOptions:\n");
774  printf("  -b       show compiled code (bytecode)\n");  printf("  -b       show compiled code (bytecode)\n");
775  printf("  -C       show PCRE compile-time options and exit\n");  printf("  -C       show PCRE compile-time options and exit\n");
776  printf("  -d       debug: show compiled code and information (-b and -i)\n");  printf("  -d       debug: show compiled code and information (-b and -i)\n");
# Line 997  while (!done) Line 1039  while (!done)
1039    use_utf8 = 0;    use_utf8 = 0;
1040    debug_lengths = 1;    debug_lengths = 1;
1041    
1042    if (infile == stdin) printf("  re> ");    if (extend_inputline(infile, buffer, "  re> ") == NULL) break;
   if (extend_inputline(infile, buffer) == NULL) break;  
1043    if (infile != stdin) fprintf(outfile, "%s", (char *)buffer);    if (infile != stdin) fprintf(outfile, "%s", (char *)buffer);
1044    fflush(outfile);    fflush(outfile);
1045    
# Line 1114  while (!done) Line 1155  while (!done)
1155        pp++;        pp++;
1156        }        }
1157      if (*pp != 0) break;      if (*pp != 0) break;
1158      if (infile == stdin) printf("    > ");      if ((pp = extend_inputline(infile, pp, "    > ")) == NULL)
     if ((pp = extend_inputline(infile, pp)) == NULL)  
1159        {        {
1160        fprintf(outfile, "** Unexpected EOF\n");        fprintf(outfile, "** Unexpected EOF\n");
1161        done = 1;        done = 1;
# Line 1289  while (!done) Line 1329  while (!done)
1329          {          {
1330          for (;;)          for (;;)
1331            {            {
1332            if (extend_inputline(infile, buffer) == NULL)            if (extend_inputline(infile, buffer, NULL) == NULL)
1333              {              {
1334              done = 1;              done = 1;
1335              goto CONTINUE;              goto CONTINUE;
# Line 1684  while (!done) Line 1724  while (!done)
1724      len = 0;      len = 0;
1725      for (;;)      for (;;)
1726        {        {
1727        if (infile == stdin) printf("data> ");        if (extend_inputline(infile, buffer + len, "data> ") == NULL)
       if (extend_inputline(infile, buffer + len) == NULL)  
1728          {          {
1729          if (len > 0) break;          if (len > 0) break;
1730          done = 1;          done = 1;

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