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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmStringAlgorithms.h"
#include <algorithm>
#include <cstdio>
#include <errno.h>
#include <stdlib.h>
std::string cmTrimWhitespace(cm::string_view str)
{
auto start = str.begin();
while (start != str.end() && cmIsSpace(*start)) {
++start;
}
if (start == str.end()) {
return std::string();
}
auto stop = str.end() - 1;
while (cmIsSpace(*stop)) {
--stop;
}
return std::string(start, stop + 1);
}
std::string cmRemoveQuotes(cm::string_view str)
{
// We process only strings that have two quotes at least.
// Also front() and back() are only defined behavior on non empty strings.
if (str.size() >= 2 && //
str.front() == '"' && //
str.back() == '"') {
// Remove a quote from the front and back
str.remove_prefix(1);
str.remove_suffix(1);
}
return std::string(str);
}
std::string cmEscapeQuotes(cm::string_view str)
{
std::string result;
result.reserve(str.size());
for (const char ch : str) {
if (ch == '"') {
result += '\\';
}
result += ch;
}
return result;
}
std::vector<std::string> cmTokenize(cm::string_view str, cm::string_view sep)
{
std::vector<std::string> tokens;
cm::string_view::size_type tokend = 0;
do {
cm::string_view::size_type tokstart = str.find_first_not_of(sep, tokend);
if (tokstart == cm::string_view::npos) {
break; // no more tokens
}
tokend = str.find_first_of(sep, tokstart);
if (tokend == cm::string_view::npos) {
tokens.emplace_back(str.substr(tokstart));
} else {
tokens.emplace_back(str.substr(tokstart, tokend - tokstart));
}
} while (tokend != cm::string_view::npos);
if (tokens.empty()) {
tokens.emplace_back();
}
return tokens;
}
namespace {
template <std::size_t N, typename T>
inline void MakeDigits(cm::string_view& view, char (&digits)[N],
const char* pattern, T value)
{
int res = std::snprintf(digits, N, pattern, value);
if (res > 0 && res < static_cast<int>(N)) {
view = cm::string_view(digits, static_cast<std::size_t>(res));
}
}
} // unnamed namespace
cmAlphaNum::cmAlphaNum(int val)
{
MakeDigits(View_, Digits_, "%i", val);
}
cmAlphaNum::cmAlphaNum(unsigned int val)
{
MakeDigits(View_, Digits_, "%u", val);
}
cmAlphaNum::cmAlphaNum(long int val)
{
MakeDigits(View_, Digits_, "%li", val);
}
cmAlphaNum::cmAlphaNum(unsigned long int val)
{
MakeDigits(View_, Digits_, "%lu", val);
}
cmAlphaNum::cmAlphaNum(long long int val)
{
MakeDigits(View_, Digits_, "%lli", val);
}
cmAlphaNum::cmAlphaNum(unsigned long long int val)
{
MakeDigits(View_, Digits_, "%llu", val);
}
cmAlphaNum::cmAlphaNum(float val)
{
MakeDigits(View_, Digits_, "%g", static_cast<double>(val));
}
cmAlphaNum::cmAlphaNum(double val)
{
MakeDigits(View_, Digits_, "%g", val);
}
std::string cmCatViews(std::initializer_list<cm::string_view> views)
{
std::size_t total_size = 0;
for (cm::string_view const& view : views) {
total_size += view.size();
}
std::string result(total_size, '\0');
std::string::iterator sit = result.begin();
for (cm::string_view const& view : views) {
sit = std::copy_n(view.data(), view.size(), sit);
}
return result;
}
bool cmStrToLong(const char* str, long* value)
{
errno = 0;
char* endp;
*value = strtol(str, &endp, 10);
return (*endp == '\0') && (endp != str) && (errno == 0);
}
bool cmStrToLong(std::string const& str, long* value)
{
return cmStrToLong(str.c_str(), value);
}
bool cmStrToULong(const char* str, unsigned long* value)
{
errno = 0;
char* endp;
while (cmIsSpace(*str)) {
++str;
}
if (*str == '-') {
return false;
}
*value = strtoul(str, &endp, 10);
return (*endp == '\0') && (endp != str) && (errno == 0);
}
bool cmStrToULong(std::string const& str, unsigned long* value)
{
return cmStrToULong(str.c_str(), value);
}
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