libsent/src/util/readfile.c

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/*
 * Copyright (c) 1991-2011 Kawahara Lab., Kyoto University
 * Copyright (c) 2000-2005 Shikano Lab., Nara Institute of Science and Technology
 * Copyright (c) 2005-2011 Julius project team, Nagoya Institute of Technology
 * All rights reserved
 */

#include <sent/stddefs.h>
#include <sent/tcpip.h>

#ifdef HAVE_ZLIB
#include <zlib.h>
#endif


char *
getl(char *buf, int maxlen, FILE *fp)
{
  int newline;

  while(
#ifdef HAVE_ZLIB
        gzgets((gzFile)fp, buf, maxlen) != Z_NULL
#else
        fgets(buf, maxlen, fp) != NULL
#endif
        ) {
    newline = strlen(buf)-1;    /* chop newline */
    if (buf[newline] == '\n') {
      buf[newline] = '\0';
      newline--;
    }
    if (newline >= 0 && buf[newline] == '\r') buf[newline] = '\0';
    if (buf[0] == '\0') continue; /* if blank line, read next */
    return buf;
  }
  return NULL;
}

char *
getl_fp(char *buf, int maxlen, FILE *fp)
{
  int newline;

  while(fgets(buf, maxlen, fp) != NULL) {
    newline = strlen(buf)-1;    /* chop newline */
    if (buf[newline] == '\n') {
      buf[newline] = '\0';
      newline--;
    }
    if (newline >= 0 && buf[newline] == '\r') buf[newline] = '\0';
    if (buf[0] == '\0') continue; /* if blank line, read next */
    return buf;
  }
  return NULL;
}

/* get 1 line input from stdin with prompt */
/* return value: newly allocated buffer */
/* repeat if no input, and */
/* returns NULL on EOF */
char *
get_line_from_stdin(char *buf, int buflen, char *prompt)
{
  char *p;

  do {
    fprintf(stderr, "%s",prompt);
    if (fgets(buf, buflen, stdin) == NULL) {
      return(NULL);
    }
    /* chop last newline */
    p = buf + strlen(buf) - 1;
    if (p >= buf && *p == '\n') {
      *(p --) = '\0';
    }
    if (p >= buf && *p == '\r') {
      *(p --) = '\0';
    }
    /* chop last space */
    while(p >= buf && *p == ' ') {
      *(p --) = '\0';
    }
  } while (!buf[0]);            /* loop till some input */

  return(buf);
}