replace_string.c File Reference

Provides functions to replace occurrences of substrings within strings. More...

#include "mdb.h"

Go to the source code of this file.

Functions
int	replace_string (char *t, char *s, char *orig, char *repl)
	Replace all occurrences of one string with another string.
int	replace_stringn (char *t, char *s, char *orig, char *repl, long count_limit)
	Replace a limited number of occurrences of one string with another string.
int	replaceString (char *t, char *s, char *orig, char *repl, long count_limit, long here)
	Replace occurrences of one string with another string with additional options.

Detailed Description

Provides functions to replace occurrences of substrings within strings.

Copyright

• (c) 2002 The University of Chicago, as Operator of Argonne National Laboratory.
• (c) 2002 The Regents of the University of California, as Operator of Los Alamos National Laboratory.

License

This file is distributed under the terms of the Software License Agreement found in the file LICENSE included with this distribution.

Author

M. Borland, C. Saunders, R. Soliday

Definition in file replace_string.c.

Function Documentation

replace_string()

int replace_string	(	char *	t,
		char *	s,
		char *	orig,
		char *	repl )

Replace all occurrences of one string with another string.

This function replaces all instances of the substring orig in the source string s with the substring repl, and stores the result in the destination string t.

Parameters

t	Destination string where the result is stored.
s	Source string in which replacements are to be made.
orig	The substring to be replaced.
repl	The substring to replace with.

Returns

The number of replacements made.

Definition at line 29 of file replace_string.c.

                                                             {
  return replaceString(t, s, orig, repl, -1, 0);
}

replace_stringn()

int replace_stringn	(	char *	t,
		char *	s,
		char *	orig,
		char *	repl,
		long	count_limit )

Replace a limited number of occurrences of one string with another string.

This function replaces up to count_limit instances of the substring orig in the source string s with the substring repl, and stores the result in the destination string t.

Parameters

t	Destination string where the result is stored.
s	Source string in which replacements are to be made.
orig	The substring to be replaced.
repl	The substring to replace with.
count_limit	The maximum number of replacements to perform.

Returns

The number of replacements made.

Definition at line 46 of file replace_string.c.

                                                                                {
  return replaceString(t, s, orig, repl, count_limit, 0);
}

replaceString()

int replaceString	(	char *	t,
		char *	s,
		char *	orig,
		char *	repl,
		long	count_limit,
		long	here )

Replace occurrences of one string with another string with additional options.

This function replaces instances of the substring orig in the source string s with the substring repl, up to a maximum of count_limit replacements. The here parameter controls additional replacement behavior. The result is stored in the destination string t.

Parameters

t	Destination string where the result is stored.
s	Source string in which replacements are to be made.
orig	The substring to be replaced.
repl	The substring to replace with.
count_limit	The maximum number of replacements to perform. If negative, no limit is applied.
here	Additional parameter to control replacement behavior.

Returns

The number of replacements made.

Definition at line 65 of file replace_string.c.

                                                                                         {
  char *ptr0, *ptr1;
  int count;
  char temp;
 
  ptr0 = s;
  t[0] = 0;
  count = 0;
  while ((count_limit < 0 || count < count_limit) && (ptr1 = str_in(ptr0, orig))) {
    if (here && ptr1 != ptr0)
      break;
    count++;
    temp = *ptr1;
    *ptr1 = 0;
    strcat(t, ptr0);
    strcat(t, repl);
    ptr0 = ptr1 + strlen(orig);
    *ptr1 = temp;
  }
  if (strlen(ptr0))
    strcat(t, ptr0);
  return (count);
}