/src/rnp/src/common/str-utils.cpp

Source
/*
 * Copyright (c) 2017 [Ribose Inc](https://www.ribose.com).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1.  Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *
 * 2.  Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/** String utilities
 *  @file
 */

#include <cstddef>
#include <cstring>
#include <cctype>
#include <stdexcept>
#include "str-utils.h"
#ifdef _WIN32
#include <locale>
#include <codecvt>
#endif

using std::size_t;
using std::strlen;

namespace rnp {
char *
strip_eol(char *s)
{
    size_t len = strlen(s);

    while ((len > 0) && ((s[len - 1] == '\n') || (s[len - 1] == '\r'))) {
        s[--len] = '\0';
    }

    return s;
}

bool
strip_eol(std::string &s)
{
    size_t len = s.size();
    while (len && ((s[len - 1] == '\n') || (s[len - 1] == '\r'))) {
        len--;
    }
    if (len == s.size()) {
        return false;
    }
    s.resize(len);
    return true;
}

bool
is_blank_line(const char *line, size_t len)
{
    for (size_t i = 0; i < len && line[i]; i++) {
        if (line[i] != ' ' && line[i] != '\t' && line[i] != '\r') {
            return false;
        }
    }
    return true;
}

bool
str_case_eq(const char *s1, const char *s2)
{
    while (*s1 && *s2) {
        if (std::tolower(*s1) != std::tolower(*s2)) {
            return false;
        }
        s1++;
        s2++;
    }
    return !*s1 && !*s2;
}

bool
str_case_eq(const std::string &s1, const std::string &s2)
{
    if (s1.size() != s2.size()) {
        return false;
    }
    return str_case_eq(s1.c_str(), s2.c_str());
}

static size_t
hex_prefix_len(const std::string &str)
{
    if ((str.length() >= 2) && (str[0] == '0') && ((str[1] == 'x') || (str[1] == 'X'))) {
        return 2;
    }
    return 0;
}

bool
is_hex(const std::string &s)
{
    for (size_t i = hex_prefix_len(s); i < s.length(); i++) {
        auto &ch = s[i];
        if ((ch >= '0') && (ch <= '9')) {
            continue;
        }
        if ((ch >= 'a') && (ch <= 'f')) {
            continue;
        }
        if ((ch >= 'A') && (ch <= 'F')) {
            continue;
        }
        if ((ch == ' ') || (ch == '\t')) {
            continue;
        }
        return false;
    }
    return true;
}

std::string
strip_hex(const std::string &s)
{
    std::string res = "";
    for (size_t idx = hex_prefix_len(s); idx < s.length(); idx++) {
        auto ch = s[idx];
        if ((ch == ' ') || (ch == '\t')) {
            continue;
        }
        res.push_back(ch);
    }
    return res;
}

char *
lowercase(char *s)
{
    if (!s) {
        return s;
    }
    for (char *ptr = s; *ptr; ++ptr) {
        *ptr = tolower(*ptr);
    }
    return s;
}

bool
str_to_int(const std::string &s, int &val)
{
    for (const char &ch : s) {
        if ((ch < '0') || (ch > '9')) {
            return false;
        }
    }
    try {
        val = std::stoi(s);
    } catch (std::out_of_range const &ex) {
        return false;
    }
    return true;
}

bool
is_slash(char c)
{
    return (c == '/') || (c == '\\');
}

} // namespace rnp

#ifdef _WIN32
std::wstring
wstr_from_utf8(const char *s)
{
    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> utf8conv;
    return utf8conv.from_bytes(s);
}

std::wstring
wstr_from_utf8(const char *first, const char *last)
{
    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> utf8conv;
    return utf8conv.from_bytes(first, last);
}

std::wstring
wstr_from_utf8(const std::string &s)
{
    return wstr_from_utf8(s.c_str());
}

std::string
wstr_to_utf8(const wchar_t *ws)
{
    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> utf8conv;
    return utf8conv.to_bytes(ws);
}

std::string
wstr_to_utf8(const std::wstring &ws)
{
    return wstr_to_utf8(ws.c_str());
}
#endif

Coverage Report

Created: 2026-06-15 06:43

Line	Count	Source
1		/*
2		* Copyright (c) 2017 [Ribose Inc](https://www.ribose.com).
3		* All rights reserved.
4		*
5		* Redistribution and use in source and binary forms, with or without modification,
6		* are permitted provided that the following conditions are met:
7		*
8		* 1. Redistributions of source code must retain the above copyright notice,
9		* this list of conditions and the following disclaimer.
10		*
11		* 2. Redistributions in binary form must reproduce the above copyright notice,
12		* this list of conditions and the following disclaimer in the documentation
13		* and/or other materials provided with the distribution.
14		*
15		* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
16		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17		* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18		* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
19		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21		* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22		* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23		* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24		* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25		*/
26		/** String utilities
27		* @file
28		*/
29
30		#include <cstddef>
31		#include <cstring>
32		#include <cctype>
33		#include <stdexcept>
34		#include "str-utils.h"
35		#ifdef _WIN32
36		#include <locale>
37		#include <codecvt>
38		#endif
39
40		using std::size_t;
41		using std::strlen;
42
43		namespace rnp {
44		char *
45		strip_eol(char *s)
46	0	{
47	0	size_t len = strlen(s);
48
49	0	while ((len > 0) && ((s[len - 1] == '\n') \|\| (s[len - 1] == '\r'))) {
50	0	s[--len] = '\0';
51	0	}
52
53	0	return s;
54	0	}
55
56		bool
57		strip_eol(std::string &s)
58	0	{
59	0	size_t len = s.size();
60	0	while (len && ((s[len - 1] == '\n') \|\| (s[len - 1] == '\r'))) {
61	0	len--;
62	0	}
63	0	if (len == s.size()) {
64	0	return false;
65	0	}
66	0	s.resize(len);
67	0	return true;
68	0	}
69
70		bool
71		is_blank_line(const char *line, size_t len)
72	274k	{
73	291k	for (size_t i = 0; i < len && line[i]; i++) {
74	291k	if (line[i] != ' ' && line[i] != '\t' && line[i] != '\r') {
75	274k	return false;
76	274k	}
77	291k	}
78	26	return true;
79	274k	}
80
81		bool
82		str_case_eq(const char s1, const char s2)
83	302k	{
84	592k	while (s1 && s2) {
85	556k	if (std::tolower(s1) != std::tolower(s2)) {
86	266k	return false;
87	266k	}
88	289k	s1++;
89	289k	s2++;
90	289k	}
91	36.2k	return !s1 && !s2;
92	302k	}
93
94		bool
95		str_case_eq(const std::string &s1, const std::string &s2)
96	0	{
97	0	if (s1.size() != s2.size()) {
98	0	return false;
99	0	}
100	0	return str_case_eq(s1.c_str(), s2.c_str());
101	0	}
102
103		static size_t
104		hex_prefix_len(const std::string &str)
105	540k	{
106	540k	if ((str.length() >= 2) && (str[0] == '0') && ((str[1] == 'x') \|\| (str[1] == 'X'))) {
107	540k	return 2;
108	540k	}
109	0	return 0;
110	540k	}
111
112		bool
113		is_hex(const std::string &s)
114	540k	{
115	39.3M	for (size_t i = hex_prefix_len(s); i < s.length(); i++) {
116	38.8M	auto &ch = s[i];
117	38.8M	if ((ch >= '0') && (ch <= '9')) {
118	20.3M	continue;
119	20.3M	}
120	18.4M	if ((ch >= 'a') && (ch <= 'f')) {
121	17.8M	continue;
122	17.8M	}
123	581k	if ((ch >= 'A') && (ch <= 'F')) {
124	581k	continue;
125	581k	}
126	0	if ((ch == ' ') \|\| (ch == '\t')) {
127	0	continue;
128	0	}
129	0	return false;
130	0	}
131	540k	return true;
132	540k	}
133
134		std::string
135		strip_hex(const std::string &s)
136	0	{
137	0	std::string res = "";
138	0	for (size_t idx = hex_prefix_len(s); idx < s.length(); idx++) {
139	0	auto ch = s[idx];
140	0	if ((ch == ' ') \|\| (ch == '\t')) {
141	0	continue;
142	0	}
143	0	res.push_back(ch);
144	0	}
145	0	return res;
146	0	}
147
148		char *
149		lowercase(char *s)
150	0	{
151	0	if (!s) {
152	0	return s;
153	0	}
154	0	for (char ptr = s; ptr; ++ptr) {
155	0	ptr = tolower(ptr);
156	0	}
157	0	return s;
158	0	}
159
160		bool
161		str_to_int(const std::string &s, int &val)
162	0	{
163	0	for (const char &ch : s) {
164	0	if ((ch < '0') \|\| (ch > '9')) {
165	0	return false;
166	0	}
167	0	}
168	0	try {
169	0	val = std::stoi(s);
170	0	} catch (std::out_of_range const &ex) {
171	0	return false;
172	0	}
173	0	return true;
174	0	}
175
176		bool
177		is_slash(char c)
178	0	{
179	0	return (c == '/') \|\| (c == '\\');
180	0	}
181
182		} // namespace rnp
183
184		#ifdef _WIN32
185		std::wstring
186		wstr_from_utf8(const char *s)
187		{
188		std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> utf8conv;
189		return utf8conv.from_bytes(s);
190		}
191
192		std::wstring
193		wstr_from_utf8(const char first, const char last)
194		{
195		std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> utf8conv;
196		return utf8conv.from_bytes(first, last);
197		}
198
199		std::wstring
200		wstr_from_utf8(const std::string &s)
201		{
202		return wstr_from_utf8(s.c_str());
203		}
204
205		std::string
206		wstr_to_utf8(const wchar_t *ws)
207		{
208		std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> utf8conv;
209		return utf8conv.to_bytes(ws);
210		}
211
212		std::string
213		wstr_to_utf8(const std::wstring &ws)
214		{
215		return wstr_to_utf8(ws.c_str());
216		}
217		#endif