44 lines
928 B
C++
44 lines
928 B
C++
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#include <cctype>
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#include <string>
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#include <vector>
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#include "split.h"
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using std::vector;
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using std::string;
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#ifndef _MSC_VER
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using std::isspace;
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#endif
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vector<string> split(const string& s)
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{
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vector<string> ret;
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typedef string::size_type string_size;
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string_size i = 0;
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// invariant: we have processed characters `['original value of `i', `i)'
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while (i != s.size()) {
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// ignore leading blanks
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// invariant: characters in range `['original `i', current `i)' are all spaces
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while (i != s.size() && isspace(s[i]))
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++i;
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// find end of next word
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string_size j = i;
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// invariant: none of the characters in range `['original `j', current `j)' is a space
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while (j != s.size() && !isspace(s[j]))
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++j;
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// if we found some nonwhitespace characters
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if (i != j) {
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// copy from `s' starting at `i' and taking `j' `\-' `i' chars
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ret.push_back(s.substr(i, j - i));
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i = j;
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}
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}
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return ret;
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}
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