File size: 3,400 Bytes
23d354c | 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 | // OpenSTA, Static Timing Analyzer
// Copyright (c) 2026, Parallax Software, Inc.
//
// 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 3 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, see <https://www.gnu.org/licenses/>.
//
// The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software.
//
// Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
//
// This notice may not be removed or altered from any source distribution.
#include "StringUtil.hh"
#include <algorithm>
#include <cctype>
#include <cerrno>
#include <charconv>
#include <cstdlib>
#include <system_error>
#include <version>
namespace sta {
bool
isDigits(const char *str)
{
for (const char *s = str; *s; s++) {
if (!isdigit(*s))
return false;
}
return true;
}
bool
isDigits(std::string_view str)
{
for (char ch : str) {
if (!isdigit(ch))
return false;
}
return true;
}
// Wrapper for the absurdly named std::from_chars.
std::pair<float, bool>
stringFloat(const std::string &str)
{
float value;
// OsX 15.xx and earlier clang do not support std::from_chars.
#if defined(__cpp_lib_to_chars) && __cpp_lib_to_chars >= 201611L
auto [ptr, ec] = std::from_chars(str.data(), str.data() + str.size(), value);
if (ec == std::errc()
&& *ptr == '\0')
return {value, true};
else
return {0.0, false};
#else
char *ptr;
errno = 0;
value = strtof(str.data(), &ptr);
if (errno != 0 || *ptr != '\0')
return {0.0, false};
else
return {value, true};
#endif
}
std::pair<long long, bool>
stringLong(const std::string &str,
int base)
{
long long value;
#if defined(__cpp_lib_to_chars) && __cpp_lib_to_chars >= 201611L
auto [ptr, ec] = std::from_chars(str.data(), str.data() + str.size(), value, base);
// Check for success and that we consumed the entire string
if (ec == std::errc() && ptr == str.data() + str.size())
return {value, true};
else
return {0LL, false};
#else
char *ptr;
errno = 0;
// strtoll handles "long long" specifically
value = std::strtoll(str.data(), &ptr, base);
if (errno == ERANGE || *ptr != '\0' || ptr == str.data())
return {0LL, false};
else
return {value, true};
#endif
}
void
trimRight(std::string &str)
{
str.erase(str.find_last_not_of(' ') + 1);
}
StringSeq
parseTokens(const std::string &text,
std::string_view delims)
{
StringSeq tokens;
auto start = text.find_first_not_of(delims);
auto end = text.find_first_of(delims, start);
while (end != std::string::npos) {
tokens.push_back(text.substr(start, end - start));
start = text.find_first_not_of(delims, end);
end = text.find_first_of(delims, start);
}
if (start != std::string::npos)
tokens.push_back(text.substr(start));
return tokens;
}
} // namespace sta
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