You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
310 lines
7.3 KiB
310 lines
7.3 KiB
// Scintilla source code edit control
|
|
/** @file WordList.cxx
|
|
** Hold a list of words.
|
|
**/
|
|
// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
|
|
// The License.txt file describes the conditions under which this software may be distributed.
|
|
|
|
#include <cstdlib>
|
|
#include <cassert>
|
|
#include <cstring>
|
|
|
|
#include <string>
|
|
#include <algorithm>
|
|
#include <iterator>
|
|
#include <memory>
|
|
|
|
#include "WordList.h"
|
|
|
|
using namespace Lexilla;
|
|
|
|
namespace {
|
|
|
|
/**
|
|
* Creates an array that points into each word in the string and puts \0 terminators
|
|
* after each word.
|
|
*/
|
|
std::unique_ptr<char *[]> ArrayFromWordList(char *wordlist, size_t slen, size_t *len, bool onlyLineEnds = false) {
|
|
assert(wordlist);
|
|
size_t words = 0;
|
|
// For rapid determination of whether a character is a separator, build
|
|
// a look up table.
|
|
bool wordSeparator[256] = {}; // Initialise all to false.
|
|
wordSeparator[static_cast<unsigned int>('\r')] = true;
|
|
wordSeparator[static_cast<unsigned int>('\n')] = true;
|
|
if (!onlyLineEnds) {
|
|
wordSeparator[static_cast<unsigned int>(' ')] = true;
|
|
wordSeparator[static_cast<unsigned int>('\t')] = true;
|
|
}
|
|
unsigned char prev = '\n';
|
|
for (int j = 0; wordlist[j]; j++) {
|
|
const unsigned char curr = wordlist[j];
|
|
if (!wordSeparator[curr] && wordSeparator[prev])
|
|
words++;
|
|
prev = curr;
|
|
}
|
|
std::unique_ptr<char *[]> keywords = std::make_unique<char *[]>(words + 1);
|
|
size_t wordsStore = 0;
|
|
if (words) {
|
|
unsigned char previous = '\0';
|
|
for (size_t k = 0; k < slen; k++) {
|
|
if (!wordSeparator[static_cast<unsigned char>(wordlist[k])]) {
|
|
if (!previous) {
|
|
keywords[wordsStore] = &wordlist[k];
|
|
wordsStore++;
|
|
}
|
|
} else {
|
|
wordlist[k] = '\0';
|
|
}
|
|
previous = wordlist[k];
|
|
}
|
|
}
|
|
assert(wordsStore < (words + 1));
|
|
keywords[wordsStore] = &wordlist[slen];
|
|
*len = wordsStore;
|
|
return keywords;
|
|
}
|
|
|
|
bool cmpWords(const char *a, const char *b) noexcept {
|
|
return strcmp(a, b) < 0;
|
|
}
|
|
|
|
}
|
|
|
|
WordList::WordList(bool onlyLineEnds_) noexcept :
|
|
words(nullptr), list(nullptr), len(0), onlyLineEnds(onlyLineEnds_) {
|
|
// Prevent warnings by static analyzers about uninitialized starts.
|
|
starts[0] = -1;
|
|
}
|
|
|
|
WordList::~WordList() {
|
|
Clear();
|
|
}
|
|
|
|
WordList::operator bool() const noexcept {
|
|
return len != 0;
|
|
}
|
|
|
|
bool WordList::operator!=(const WordList &other) const noexcept {
|
|
if (len != other.len)
|
|
return true;
|
|
for (size_t i=0; i<len; i++) {
|
|
if (strcmp(words[i], other.words[i]) != 0)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
int WordList::Length() const noexcept {
|
|
return static_cast<int>(len);
|
|
}
|
|
|
|
void WordList::Clear() noexcept {
|
|
delete []list;
|
|
list = nullptr;
|
|
delete []words;
|
|
words = nullptr;
|
|
len = 0;
|
|
}
|
|
|
|
bool WordList::Set(const char *s) {
|
|
const size_t lenS = strlen(s) + 1;
|
|
std::unique_ptr<char[]> listTemp = std::make_unique<char[]>(lenS);
|
|
memcpy(listTemp.get(), s, lenS);
|
|
size_t lenTemp = 0;
|
|
std::unique_ptr<char *[]> wordsTemp = ArrayFromWordList(listTemp.get(), lenS - 1, &lenTemp, onlyLineEnds);
|
|
std::sort(wordsTemp.get(), wordsTemp.get() + lenTemp, cmpWords);
|
|
|
|
if (lenTemp == len) {
|
|
bool changed = false;
|
|
for (size_t i = 0; i < lenTemp; i++) {
|
|
if (strcmp(words[i], wordsTemp[i]) != 0) {
|
|
changed = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!changed) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
Clear();
|
|
words = wordsTemp.release();
|
|
list = listTemp.release();
|
|
len = lenTemp;
|
|
std::fill(starts, std::end(starts), -1);
|
|
for (int l = static_cast<int>(len - 1); l >= 0; l--) {
|
|
unsigned char const indexChar = words[l][0];
|
|
starts[indexChar] = l;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/** Check whether a string is in the list.
|
|
* List elements are either exact matches or prefixes.
|
|
* Prefix elements start with '^' and match all strings that start with the rest of the element
|
|
* so '^GTK_' matches 'GTK_X', 'GTK_MAJOR_VERSION', and 'GTK_'.
|
|
*/
|
|
bool WordList::InList(const char *s) const noexcept {
|
|
if (!words)
|
|
return false;
|
|
const char first = s[0];
|
|
const unsigned char firstChar = first;
|
|
int j = starts[firstChar];
|
|
if (j >= 0) {
|
|
while (words[j][0] == first) {
|
|
if (s[1] == words[j][1]) {
|
|
const char *a = words[j] + 1;
|
|
const char *b = s + 1;
|
|
while (*a && *a == *b) {
|
|
a++;
|
|
b++;
|
|
}
|
|
if (!*a && !*b)
|
|
return true;
|
|
}
|
|
j++;
|
|
}
|
|
}
|
|
j = starts[static_cast<unsigned int>('^')];
|
|
if (j >= 0) {
|
|
while (words[j][0] == '^') {
|
|
const char *a = words[j] + 1;
|
|
const char *b = s;
|
|
while (*a && *a == *b) {
|
|
a++;
|
|
b++;
|
|
}
|
|
if (!*a)
|
|
return true;
|
|
j++;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/** convenience overload so can easily call with std::string.
|
|
*/
|
|
bool WordList::InList(const std::string &s) const noexcept {
|
|
return InList(s.c_str());
|
|
}
|
|
|
|
/** similar to InList, but word s can be a substring of keyword.
|
|
* eg. the keyword define is defined as def~ine. This means the word must start
|
|
* with def to be a keyword, but also defi, defin and define are valid.
|
|
* The marker is ~ in this case.
|
|
*/
|
|
bool WordList::InListAbbreviated(const char *s, const char marker) const noexcept {
|
|
if (!words)
|
|
return false;
|
|
const char first = s[0];
|
|
const unsigned char firstChar = first;
|
|
int j = starts[firstChar];
|
|
if (j >= 0) {
|
|
while (words[j][0] == first) {
|
|
bool isSubword = false;
|
|
int start = 1;
|
|
if (words[j][1] == marker) {
|
|
isSubword = true;
|
|
start++;
|
|
}
|
|
if (s[1] == words[j][start]) {
|
|
const char *a = words[j] + start;
|
|
const char *b = s + 1;
|
|
while (*a && *a == *b) {
|
|
a++;
|
|
if (*a == marker) {
|
|
isSubword = true;
|
|
a++;
|
|
}
|
|
b++;
|
|
}
|
|
if ((!*a || isSubword) && !*b)
|
|
return true;
|
|
}
|
|
j++;
|
|
}
|
|
}
|
|
j = starts[static_cast<unsigned int>('^')];
|
|
if (j >= 0) {
|
|
while (words[j][0] == '^') {
|
|
const char *a = words[j] + 1;
|
|
const char *b = s;
|
|
while (*a && *a == *b) {
|
|
a++;
|
|
b++;
|
|
}
|
|
if (!*a)
|
|
return true;
|
|
j++;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/** similar to InListAbbreviated, but word s can be a abridged version of a keyword.
|
|
* eg. the keyword is defined as "after.~:". This means the word must have a prefix (begins with) of
|
|
* "after." and suffix (ends with) of ":" to be a keyword, Hence "after.field:" , "after.form.item:" are valid.
|
|
* Similarly "~.is.valid" keyword is suffix only... hence "field.is.valid" , "form.is.valid" are valid.
|
|
* The marker is ~ in this case.
|
|
* No multiple markers check is done and wont work.
|
|
*/
|
|
bool WordList::InListAbridged(const char *s, const char marker) const noexcept {
|
|
if (!words)
|
|
return false;
|
|
const char first = s[0];
|
|
const unsigned char firstChar = first;
|
|
int j = starts[firstChar];
|
|
if (j >= 0) {
|
|
while (words[j][0] == first) {
|
|
const char *a = words[j];
|
|
const char *b = s;
|
|
while (*a && *a == *b) {
|
|
a++;
|
|
if (*a == marker) {
|
|
a++;
|
|
const size_t suffixLengthA = strlen(a);
|
|
const size_t suffixLengthB = strlen(b);
|
|
if (suffixLengthA >= suffixLengthB)
|
|
break;
|
|
b = b + suffixLengthB - suffixLengthA - 1;
|
|
}
|
|
b++;
|
|
}
|
|
if (!*a && !*b)
|
|
return true;
|
|
j++;
|
|
}
|
|
}
|
|
|
|
j = starts[static_cast<unsigned int>(marker)];
|
|
if (j >= 0) {
|
|
while (words[j][0] == marker) {
|
|
const char *a = words[j] + 1;
|
|
const char *b = s;
|
|
const size_t suffixLengthA = strlen(a);
|
|
const size_t suffixLengthB = strlen(b);
|
|
if (suffixLengthA > suffixLengthB) {
|
|
j++;
|
|
continue;
|
|
}
|
|
b = b + suffixLengthB - suffixLengthA;
|
|
|
|
while (*a && *a == *b) {
|
|
a++;
|
|
b++;
|
|
}
|
|
if (!*a && !*b)
|
|
return true;
|
|
j++;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
const char *WordList::WordAt(int n) const noexcept {
|
|
return words[n];
|
|
}
|
|
|