Magellan Linux

Diff of /trunk/mkinitrd-magellan/busybox/libbb/fgets_str.c

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revision 983 by niro, Fri Apr 24 18:33:46 2009 UTC revision 984 by niro, Sun May 30 11:32:42 2010 UTC
# Line 10  Line 10 
10    
11  #include "libbb.h"  #include "libbb.h"
12    
13  static char *xmalloc_fgets_internal(FILE *file, const char *terminating_string, int chop_off)  static char *xmalloc_fgets_internal(FILE *file, const char *terminating_string, int chop_off, size_t *maxsz_p)
14  {  {
15   char *linebuf = NULL;   char *linebuf = NULL;
16   const int term_length = strlen(terminating_string);   const int term_length = strlen(terminating_string);
# Line 18  static char *xmalloc_fgets_internal(FILE Line 18  static char *xmalloc_fgets_internal(FILE
18   int linebufsz = 0;   int linebufsz = 0;
19   int idx = 0;   int idx = 0;
20   int ch;   int ch;
21     size_t maxsz = *maxsz_p;
22    
23   while (1) {   while (1) {
24   ch = fgetc(file);   ch = fgetc(file);
# Line 30  static char *xmalloc_fgets_internal(FILE Line 31  static char *xmalloc_fgets_internal(FILE
31   if (idx >= linebufsz) {   if (idx >= linebufsz) {
32   linebufsz += 200;   linebufsz += 200;
33   linebuf = xrealloc(linebuf, linebufsz);   linebuf = xrealloc(linebuf, linebufsz);
34     if (idx >= maxsz) {
35     linebuf[idx] = ch;
36     idx++;
37     break;
38     }
39   }   }
40    
41   linebuf[idx] = ch;   linebuf[idx] = ch;
# Line 48  static char *xmalloc_fgets_internal(FILE Line 54  static char *xmalloc_fgets_internal(FILE
54   /* Grow/shrink *first*, then store NUL */   /* Grow/shrink *first*, then store NUL */
55   linebuf = xrealloc(linebuf, idx + 1);   linebuf = xrealloc(linebuf, idx + 1);
56   linebuf[idx] = '\0';   linebuf[idx] = '\0';
57     *maxsz_p = idx;
58   return linebuf;   return linebuf;
59  }  }
60    
# Line 57  static char *xmalloc_fgets_internal(FILE Line 64  static char *xmalloc_fgets_internal(FILE
64   * Return NULL if EOF is reached immediately.  */   * Return NULL if EOF is reached immediately.  */
65  char* FAST_FUNC xmalloc_fgets_str(FILE *file, const char *terminating_string)  char* FAST_FUNC xmalloc_fgets_str(FILE *file, const char *terminating_string)
66  {  {
67   return xmalloc_fgets_internal(file, terminating_string, 0);   size_t maxsz = INT_MAX - 4095;
68     return xmalloc_fgets_internal(file, terminating_string, 0, &maxsz);
69    }
70    
71    char* FAST_FUNC xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p)
72    {
73     size_t maxsz;
74    
75     if (!maxsz_p) {
76     maxsz = INT_MAX - 4095;
77     maxsz_p = &maxsz;
78     }
79     return xmalloc_fgets_internal(file, terminating_string, 0, maxsz_p);
80  }  }
81    
82  char* FAST_FUNC xmalloc_fgetline_str(FILE *file, const char *terminating_string)  char* FAST_FUNC xmalloc_fgetline_str(FILE *file, const char *terminating_string)
83  {  {
84   return xmalloc_fgets_internal(file, terminating_string, 1);   size_t maxsz = INT_MAX - 4095;
85     return xmalloc_fgets_internal(file, terminating_string, 1, &maxsz);
86  }  }

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