replace.c
上传用户:romrleung
上传日期:2022-05-23
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文件大小:28k
- /* Copyright (C) 2000 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- /*
- Replace strings in textfile
- This program replaces strings in files or from stdin to stdout.
- It accepts a list of from-string/to-string pairs and replaces
- each occurrence of a from-string with the corresponding to-string.
- The first occurrence of a found string is matched. If there is more
- than one possibility for the string to replace, longer matches
- are preferred before shorter matches.
- Special characters in from string:
- ^ Match start of line.
- $ Match end of line.
- b Match space-character, start of line or end of line.
- For end b the next replace starts locking at the end space-character.
- An b alone or in a string matches only a space-character.
- r, t, v as in C.
- The programs make a DFA-state-machine of the strings and the speed isn't
- dependent on the count of replace-strings (only of the number of replaces).
- A line is assumed ending with n or