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1// StringUtil.cc for fluxbox
2// Copyright (c) 2001 - 2003 Henrik Kinnunen (fluxgen<at>linuxmail.org)
3//
4// Permission is hereby granted, free of charge, to any person obtaining a
5// copy of this software and associated documentation files (the "Software"),
6// to deal in the Software without restriction, including without limitation
7// the rights to use, copy, modify, merge, publish, distribute, sublicense,
8// and/or sell copies of the Software, and to permit persons to whom the
9// Software is furnished to do so, subject to the following conditions:
10//
11// The above copyright notice and this permission notice shall be included in
12// all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20// DEALINGS IN THE SOFTWARE.
21
22// $Id: StringUtil.cc,v 1.1 2003/04/26 18:12:47 fluxgen Exp $
23
24#include "StringUtil.hh"
25
26#include <string>
27#include <cstdio>
28#include <cstdlib>
29#include <cctype>
30#include <cassert>
31#include <memory>
32
33using namespace std;
34
35namespace FbTk {
36
37namespace StringUtil {
38
39/**
40 Takes a pointer to string *s as an argument,
41 creates a new string n, copies s to n and
42 returns a pointer to n.
43*/
44char *strdup(const char *s) {
45 int l = strlen(s) + 1;
46 char *n = new char[l];
47 strncpy(n, s, l);
48 return n;
49}
50
51/**
52 Tries to find a string in another and
53 ignoring the case of the characters
54 Returns 0 on success else pointer to str.
55*/
56const char *strcasestr(const char *str, const char *ptn) {
57 const char *s2, *p2;
58 for( ; *str; str++) {
59 for(s2=str, p2=ptn; ; s2++,p2++) {
60 // check if we reached the end of ptn, if so, return str
61 if (!*p2)
62 return str;
63 // check if the chars match(ignoring case)
64 if (toupper(*s2) != toupper(*p2))
65 break;
66 }
67 }
68 return 0;
69}
70
71/**
72 if ~ then expand it to home of user
73 returns expanded filename
74*/
75string expandFilename(const std::string &filename) {
76
77 string retval;
78 size_t pos = filename.find_first_not_of(" \t");
79 if (pos != std::string::npos && filename[pos] == '~') {
80 retval = getenv("HOME");
81 if (pos != filename.size()) {
82 // copy from the character after '~'
83 retval += static_cast<const char *>(filename.c_str() + pos + 1);
84 }
85 } else
86 return filename; //return unmodified value
87
88 return retval;
89}
90
91/**
92 Parses a string between "first" and "last" characters
93 and ignoring ok_chars as whitespaces. The value is
94 returned in "out".
95 Returns negative value on error and this value is the position
96 in the in-string where the error occured.
97 Returns positive value on success and this value is
98 for the position + 1 in the in-string where the "last"-char value
99 was found.
100*/
101int getStringBetween(std::string& out, const char *instr, const char first, const char last,
102 const char *ok_chars) {
103 assert(first);
104 assert(last);
105 assert(instr);
106
107 std::string::size_type i = 0,
108 total_add=0; //used to add extra if there is a \last to skip
109 std::string in(instr);
110
111 // eat leading whitespace
112 i = in.find_first_not_of(ok_chars);
113 if (i == std::string::npos)
114 return -in.size(); // nothing left but whitespace
115
116 if (in[i]!=first)
117 return -i; //return position to error
118
119 // find the end of the token
120 std::string::size_type j = i;
121 while (1) {
122 j = in.find_first_of(last, j+1);
123 if (j==std::string::npos)
124 return -in.size(); //send negative size
125
126 //we found the last char, check so it doesn't have a '\' before
127 if (j>1 && in[j-1] != '\\')
128 break;
129 else if (j>1) {
130 in.erase(j-1, 1); //remove the '\'
131 j--;
132 total_add++; //save numchars removed so we can calculate totalpos
133 }
134 }
135
136 out = in.substr(i+1, j-i-1); //copy the string between first and last
137 //return value to last character
138 return (j+1+total_add);
139}
140
141void toLower(char * const conv) {
142 for (size_t byte_pos = 0; byte_pos < strlen(conv); ++byte_pos)
143 conv[byte_pos] = tolower(conv[byte_pos]);
144}
145
146}; // end namespace StringUtil
147
148}; // end namespace FbTk