tlx
replace.cpp
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1 /*******************************************************************************
2  * tlx/string/replace.cpp
3  *
4  * Part of tlx - http://panthema.net/tlx
5  *
6  * Copyright (C) 2007-2017 Timo Bingmann <tb@panthema.net>
7  *
8  * All rights reserved. Published under the Boost Software License, Version 1.0
9  ******************************************************************************/
10 
11 #include <tlx/string/replace.hpp>
12 
13 #include <algorithm>
14 #include <cstring>
15 
16 namespace tlx {
17 
18 /******************************************************************************/
19 // replace_first() in-place
20 
21 std::string& replace_first(
22  std::string* str, const std::string& needle, const std::string& instead) {
23 
24  std::string::size_type firstpos = str->find(needle);
25 
26  if (firstpos != std::string::npos)
27  str->replace(firstpos, needle.size(), instead);
28 
29  return *str;
30 }
31 
32 std::string& replace_first(
33  std::string* str, const std::string& needle, const char* instead) {
34 
35  std::string::size_type firstpos = str->find(needle);
36 
37  if (firstpos != std::string::npos)
38  str->replace(firstpos, needle.size(), instead);
39 
40  return *str;
41 }
42 
43 std::string& replace_first(
44  std::string* str, const char* needle, const std::string& instead) {
45 
46  std::string::size_type firstpos = str->find(needle);
47 
48  if (firstpos != std::string::npos)
49  str->replace(firstpos, strlen(needle), instead);
50 
51  return *str;
52 }
53 
54 std::string& replace_first(
55  std::string* str, const char* needle, const char* instead) {
56 
57  std::string::size_type firstpos = str->find(needle);
58 
59  if (firstpos != std::string::npos)
60  str->replace(firstpos, strlen(needle), instead);
61 
62  return *str;
63 }
64 
65 std::string& replace_first(std::string* str, char needle, char instead) {
66 
67  std::string::size_type firstpos = str->find(needle);
68 
69  if (firstpos != std::string::npos)
70  (*str)[firstpos] = instead;
71 
72  return *str;
73 }
74 
75 /******************************************************************************/
76 // replace_first() copy
77 
78 std::string replace_first(
79  const std::string& str,
80  const std::string& needle, const std::string& instead) {
81 
82  std::string newstr = str;
83  std::string::size_type firstpos = newstr.find(needle);
84 
85  if (firstpos != std::string::npos)
86  newstr.replace(firstpos, needle.size(), instead);
87 
88  return newstr;
89 }
90 
91 std::string replace_first(
92  const std::string& str, const std::string& needle, const char* instead) {
93 
94  std::string newstr = str;
95  std::string::size_type firstpos = newstr.find(needle);
96 
97  if (firstpos != std::string::npos)
98  newstr.replace(firstpos, needle.size(), instead);
99 
100  return newstr;
101 }
102 
103 std::string replace_first(
104  const std::string& str, const char* needle, const std::string& instead) {
105 
106  std::string newstr = str;
107  std::string::size_type firstpos = newstr.find(needle);
108 
109  if (firstpos != std::string::npos)
110  newstr.replace(firstpos, strlen(needle), instead);
111 
112  return newstr;
113 }
114 
115 std::string replace_first(
116  const std::string& str, const char* needle, const char* instead) {
117 
118  std::string newstr = str;
119  std::string::size_type firstpos = newstr.find(needle);
120 
121  if (firstpos != std::string::npos)
122  newstr.replace(firstpos, strlen(needle), instead);
123 
124  return newstr;
125 }
126 
127 std::string replace_first(const std::string& str, char needle, char instead) {
128 
129  std::string newstr = str;
130  std::string::size_type firstpos = newstr.find(needle);
131 
132  if (firstpos != std::string::npos)
133  newstr[firstpos] = instead;
134 
135  return newstr;
136 }
137 
138 /******************************************************************************/
139 // replace_all() in-place
140 
141 std::string& replace_all(
142  std::string* str, const std::string& needle, const std::string& instead) {
143 
144  std::string::size_type lastpos = 0, thispos;
145 
146  while ((thispos = str->find(needle, lastpos)) != std::string::npos)
147  {
148  str->replace(thispos, needle.size(), instead);
149  lastpos = thispos + instead.size();
150  }
151  return *str;
152 }
153 
154 std::string& replace_all(
155  std::string* str, const std::string& needle, const char* instead) {
156 
157  std::string::size_type lastpos = 0, thispos;
158  size_t instead_size = strlen(instead);
159 
160  while ((thispos = str->find(needle, lastpos)) != std::string::npos)
161  {
162  str->replace(thispos, needle.size(), instead);
163  lastpos = thispos + instead_size;
164  }
165  return *str;
166 }
167 
168 std::string& replace_all(
169  std::string* str, const char* needle, const std::string& instead) {
170 
171  std::string::size_type lastpos = 0, thispos;
172  size_t needle_size = strlen(needle);
173 
174  while ((thispos = str->find(needle, lastpos)) != std::string::npos)
175  {
176  str->replace(thispos, needle_size, instead);
177  lastpos = thispos + instead.size();
178  }
179  return *str;
180 }
181 
182 std::string& replace_all(
183  std::string* str, const char* needle, const char* instead) {
184 
185  std::string::size_type lastpos = 0, thispos;
186  size_t needle_size = strlen(needle);
187  size_t instead_size = strlen(instead);
188 
189  while ((thispos = str->find(needle, lastpos)) != std::string::npos)
190  {
191  str->replace(thispos, needle_size, instead);
192  lastpos = thispos + instead_size;
193  }
194  return *str;
195 }
196 
197 std::string& replace_all(std::string* str, char needle, char instead) {
198 
199  std::string::size_type lastpos = 0, thispos;
200 
201  while ((thispos = str->find(needle, lastpos)) != std::string::npos)
202  {
203  (*str)[thispos] = instead;
204  lastpos = thispos + 1;
205  }
206  return *str;
207 }
208 
209 /******************************************************************************/
210 // replace_all() copy
211 
212 std::string replace_all(
213  const std::string& str,
214  const std::string& needle, const std::string& instead) {
215 
216  std::string newstr = str;
217  std::string::size_type lastpos = 0, thispos;
218 
219  while ((thispos = newstr.find(needle, lastpos)) != std::string::npos)
220  {
221  newstr.replace(thispos, needle.size(), instead);
222  lastpos = thispos + instead.size();
223  }
224  return newstr;
225 }
226 
227 std::string replace_all(
228  const std::string& str, const std::string& needle, const char* instead) {
229 
230  std::string newstr = str;
231  std::string::size_type lastpos = 0, thispos;
232  size_t instead_size = strlen(instead);
233 
234  while ((thispos = newstr.find(needle, lastpos)) != std::string::npos)
235  {
236  newstr.replace(thispos, needle.size(), instead);
237  lastpos = thispos + instead_size;
238  }
239  return newstr;
240 }
241 
242 std::string replace_all(
243  const std::string& str, const char* needle, const std::string& instead) {
244 
245  std::string newstr = str;
246  std::string::size_type lastpos = 0, thispos;
247  size_t needle_size = strlen(needle);
248 
249  while ((thispos = newstr.find(needle, lastpos)) != std::string::npos)
250  {
251  newstr.replace(thispos, needle_size, instead);
252  lastpos = thispos + instead.size();
253  }
254  return newstr;
255 }
256 
257 std::string replace_all(
258  const std::string& str, const char* needle, const char* instead) {
259 
260  std::string newstr = str;
261  std::string::size_type lastpos = 0, thispos;
262  size_t needle_size = strlen(needle);
263  size_t instead_size = strlen(instead);
264 
265  while ((thispos = newstr.find(needle, lastpos)) != std::string::npos)
266  {
267  newstr.replace(thispos, needle_size, instead);
268  lastpos = thispos + instead_size;
269  }
270  return newstr;
271 }
272 
273 std::string replace_all(const std::string& str, char needle, char instead) {
274 
275  std::string newstr = str;
276  std::string::size_type lastpos = 0, thispos;
277 
278  while ((thispos = newstr.find(needle, lastpos)) != std::string::npos)
279  {
280  newstr[thispos] = instead;
281  lastpos = thispos + 1;
282  }
283  return newstr;
284 }
285 
286 } // namespace tlx
287 
288 /******************************************************************************/
tlx::replace_all
std::string & replace_all(std::string *str, const std::string &needle, const std::string &instead)
Replace all occurrences of needle in str.
Definition: replace.cpp:141
tlx::replace_first
std::string & replace_first(std::string *str, const std::string &needle, const std::string &instead)
Replace only the first occurrence of needle in str.
Definition: replace.cpp:21