1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
// StringUtil.cc for fluxbox
// Copyright (c) 2001 - 2003 Henrik Kinnunen (fluxgen<at>linuxmail.org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// $Id: StringUtil.cc,v 1.9 2003/12/16 17:06:52 fluxgen Exp $
#include "StringUtil.hh"
#include <string>
#include <cstdio>
#include <cstdlib>
#include <cctype>
#include <cassert>
#include <memory>
#include <algorithm>
using namespace std;
namespace FbTk {
namespace StringUtil {
/**
Takes a pointer to string *s as an argument,
creates a new string n, copies s to n and
returns a pointer to n.
*/
char *strdup(const char *s) {
int l = strlen(s) + 1;
char *n = new char[l];
strncpy(n, s, l);
return n;
}
/**
Tries to find a string in another and
ignoring the case of the characters
Returns 0 on success else pointer to str.
*/
const char *strcasestr(const char *str, const char *ptn) {
const char *s2, *p2;
for( ; *str; str++) {
for(s2=str, p2=ptn; ; s2++,p2++) {
// check if we reached the end of ptn, if so, return str
if (!*p2)
return str;
// check if the chars match(ignoring case)
if (toupper(*s2) != toupper(*p2))
break;
}
}
return 0;
}
/**
if ~ then expand it to home of user
returns expanded filename
*/
string expandFilename(const std::string &filename) {
string retval;
size_t pos = filename.find_first_not_of(" \t");
if (pos != std::string::npos && filename[pos] == '~') {
retval = getenv("HOME");
if (pos != filename.size()) {
// copy from the character after '~'
retval += static_cast<const char *>(filename.c_str() + pos + 1);
}
} else
return filename; //return unmodified value
return retval;
}
/**
@return string from last "." to end of string
*/
string findExtension(const std::string &filename) {
//get start of extension
std::string::size_type start_pos = filename.find_last_of(".");
if (start_pos == std::string::npos && start_pos != filename.size())
return "";
// return from last . to end of string
return filename.substr(start_pos + 1);
}
/**
Parses a string between "first" and "last" characters
and ignoring ok_chars as whitespaces. The value is
returned in "out".
Returns negative value on error and this value is the position
in the in-string where the error occured.
Returns positive value on success and this value is
for the position + 1 in the in-string where the "last"-char value
was found.
*/
int getStringBetween(std::string& out, const char *instr, const char first, const char last,
const char *ok_chars, bool allow_nesting) {
assert(first);
assert(last);
assert(instr);
std::string::size_type i = 0,
total_add=0; //used to add extra if there is a \last to skip
std::string in(instr);
// eat leading whitespace
i = in.find_first_not_of(ok_chars);
if (i == std::string::npos)
return -in.size(); // nothing left but whitespace
if (in[i]!=first)
return -i; //return position to error
// find the end of the token
std::string::size_type j = i, k;
int nesting = 0;
while (1) {
k = in.find_first_of(first, j+1);
j = in.find_first_of(last, j+1);
if (j==std::string::npos)
return -in.size(); //send negative size
if (allow_nesting && k < j && in[k-1] != '\\') {
nesting++;
j = k;
continue;
}
//we found the last char, check so it doesn't have a '\' before
if (j>1 && in[j-1] != '\\') {
if (allow_nesting && nesting > 0) nesting--;
else
break;
} else if (j>1 && !allow_nesting) { // we leave escapes if we're allowing nesting
in.erase(j-1, 1); //remove the '\'
j--;
total_add++; //save numchars removed so we can calculate totalpos
}
}
out = in.substr(i+1, j-i-1); //copy the string between first and last
//return value to last character
return (j+1+total_add);
}
std::string toLower(const std::string &conv) {
std::string ret = conv;
std::transform(ret.begin(), ret.end(), ret.begin(), tolower);
return ret;
}
std::string toUpper(const std::string &conv) {
std::string ret = conv;
std::transform(ret.begin(), ret.end(), ret.begin(), toupper);
return ret;
}
std::string basename(const std::string &filename) {
std::string::size_type first_pos = filename.find_last_of("/");
if (first_pos != std::string::npos)
return filename.substr(first_pos + 1);
return filename;
}
string::size_type removeFirstWhitespace(std::string &str) {
string::size_type first_pos = str.find_first_not_of(" \t");
if (first_pos != string::npos)
str.erase(0, first_pos);
return first_pos;
}
string::size_type removeTrailingWhitespace(std::string &str) {
// strip trailing whitespace
string::size_type first_pos = str.find_last_not_of(" \t");
if (first_pos != string::npos) {
string::size_type last_pos = str.find_first_of(" \t", first_pos);
while (last_pos != string::npos) {
str.erase(last_pos);
last_pos = str.find_first_of(" \t", last_pos);
}
}
return first_pos;
}
}; // end namespace StringUtil
}; // end namespace FbTk
|
