Initial import of qscintilla from 2007

1 files changed, 280 insertions, 0 deletions

diff --git a/include/SString.h b/include/SString.h
new file mode 100755
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+++ b/include/SString.h
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+// SciTE - Scintilla based Text Editor
+/** @file SString.h
+ ** A simple string class.
+ **/
+// Copyright 1998-2004 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#ifndef SSTRING_H
+#define SSTRING_H
+
+// These functions are implemented because each platform calls them something different.
+int CompareCaseInsensitive(const char *a, const char *b);
+int CompareNCaseInsensitive(const char *a, const char *b, size_t len);
+bool EqualCaseInsensitive(const char *a, const char *b);
+
+// Define another string class.
+// While it would be 'better' to use std::string, that doubles the executable size.
+// An SString may contain embedded nul characters.
+
+/**
+ * Base class from which the two other classes (SBuffer & SString)
+ * are derived.
+ */
+class SContainer {
+public:
+	/** Type of string lengths (sizes) and positions (indexes). */
+	typedef size_t lenpos_t;
+	/** Out of bounds value indicating that the string argument should be measured. */
+	enum { measure_length=0xffffffffU};
+
+protected:
+	char *s;				///< The C string
+	lenpos_t sSize;			///< The size of the buffer, less 1: ie. the maximum size of the string
+
+	SContainer() : s(0), sSize(0) {}
+	~SContainer() {
+		delete []s;	// Suppose it was allocated using StringAllocate
+		s = 0;
+		sSize = 0;
+	}
+	/** Size of buffer. */
+	lenpos_t size() const {
+		if (s) {
+			return sSize;
+		} else {
+			return 0;
+		}
+	}
+public:
+	/**
+	 * Allocate uninitialized memory big enough to fit a string of the given length.
+	 * @return the pointer to the new string
+	 */
+	static char *StringAllocate(lenpos_t len);
+	/**
+	 * Duplicate a buffer/C string.
+	 * Allocate memory of the given size, or big enough to fit the string if length isn't given;
+	 * then copy the given string in the allocated memory.
+	 * @return the pointer to the new string
+	 */
+	static char *StringAllocate(
+		const char *s,			///< The string to duplicate
+		lenpos_t len=measure_length);	///< The length of memory to allocate. Optional.
+};
+
+
+/**
+ * @brief A string buffer class.
+ *
+ * Main use is to ask an API the length of a string it can provide,
+ * then to allocate a buffer of the given size, and to provide this buffer
+ * to the API to put the string.
+ * This class is intended to be shortlived, to be transformed as SString
+ * as soon as it holds the string, so it has little members.
+ * Note: we assume the buffer is filled by the API. If the length can be shorter,
+ * we should set sLen to strlen(sb.ptr()) in related SString constructor and assignment.
+ */
+class SBuffer : protected SContainer {
+public:
+	SBuffer(lenpos_t len) {
+		s = StringAllocate(len);
+		if (s) {
+			*s = '\0';
+		sSize = len;
+		} else {
+			sSize = 0;
+		}
+	}
+private:
+	/// Copy constructor
+	// Here only to be on the safe size, user should avoid returning SBuffer values.
+	SBuffer(const SBuffer &source) : SContainer() {
+		s = StringAllocate(source.s, source.sSize);
+		sSize = (s) ? source.sSize : 0;
+	}
+	/// Default assignment operator
+	// Same here, shouldn't be used
+	SBuffer &operator=(const SBuffer &source) {
+		if (this != &source) {
+			delete []s;
+			s = StringAllocate(source.s, source.sSize);
+			sSize = (s) ? source.sSize : 0;
+		}
+		return *this;
+	}
+public:
+	/** Provide direct read/write access to buffer. */
+	char *ptr() {
+	    return s;
+	}
+	/** Ownership of the buffer have been taken, so release it. */
+	void reset() {
+		s = 0;
+		sSize = 0;
+	}
+	/** Size of buffer. */
+	lenpos_t size() const {
+		return SContainer::size();
+	}
+};
+
+
+/**
+ * @brief A simple string class.
+ *
+ * Hold the length of the string for quick operations,
+ * can have a buffer bigger than the string to avoid too many memory allocations and copies.
+ * May have embedded zeroes as a result of @a substitute, but relies too heavily on C string
+ * functions to allow reliable manipulations of these strings, other than simple appends, etc.
+ */
+class SString : protected SContainer {
+	lenpos_t sLen;			///< The size of the string in s
+	lenpos_t sizeGrowth;	///< Minimum growth size when appending strings
+	enum { sizeGrowthDefault = 64 };
+
+	bool grow(lenpos_t lenNew);
+	SString &assign(const char *sOther, lenpos_t sSize_=measure_length);
+
+public:
+	SString() : sLen(0), sizeGrowth(sizeGrowthDefault) {}
+	SString(const SString &source) : SContainer(), sizeGrowth(sizeGrowthDefault) {
+		s = StringAllocate(source.s, source.sLen);
+		sSize = sLen = (s) ? source.sLen : 0;
+	}
+	SString(const char *s_) : sizeGrowth(sizeGrowthDefault) {
+		s = StringAllocate(s_);
+		sSize = sLen = (s) ? strlen(s) : 0;
+	}
+	SString(SBuffer &buf) : sizeGrowth(sizeGrowthDefault) {
+		s = buf.ptr();
+		sSize = sLen = buf.size();
+		// Consumes the given buffer!
+		buf.reset();
+	}
+	SString(const char *s_, lenpos_t first, lenpos_t last) : sizeGrowth(sizeGrowthDefault) {
+		// note: expects the "last" argument to point one beyond the range end (a la STL iterators)
+		s = StringAllocate(s_ + first, last - first);
+		sSize = sLen = (s) ? last - first : 0;
+	}
+	SString(int i);
+	SString(double d, int precision);
+	~SString() {
+		sLen = 0;
+	}
+	void clear() {
+		if (s) {
+			*s = '\0';
+		}
+		sLen = 0;
+	}
+	/** Size of buffer. */
+	lenpos_t size() const {
+		return SContainer::size();
+	}
+	/** Size of string in buffer. */
+	lenpos_t length() const {
+		return sLen;
+	}
+	/** Read access to a character of the string. */
+	char operator[](lenpos_t i) const {
+		return (s && i < sSize) ? s[i] : '\0';
+	}
+	SString &operator=(const char *source) {
+		return assign(source);
+	}
+	SString &operator=(const SString &source) {
+		if (this != &source) {
+			assign(source.s, source.sLen);
+		}
+		return *this;
+	}
+	bool operator==(const SString &sOther) const;
+	bool operator!=(const SString &sOther) const {
+		return !operator==(sOther);
+	}
+	bool operator==(const char *sOther) const;
+	bool operator!=(const char *sOther) const {
+		return !operator==(sOther);
+	}
+	bool contains(char ch) const {
+		return (s && *s) ? strchr(s, ch) != 0 : false;
+	}
+	void setsizegrowth(lenpos_t sizeGrowth_) {
+		sizeGrowth = sizeGrowth_;
+	}
+	const char *c_str() const {
+		return s ? s : "";
+	}
+	/** Give ownership of buffer to caller which must use delete[] to free buffer. */
+	char *detach() {
+		char *sRet = s;
+		s = 0;
+		sSize = 0;
+		sLen = 0;
+		return sRet;
+	}
+	SString substr(lenpos_t subPos, lenpos_t subLen=measure_length) const;
+	SString &lowercase(lenpos_t subPos = 0, lenpos_t subLen=measure_length);
+	SString &uppercase(lenpos_t subPos = 0, lenpos_t subLen=measure_length);
+	SString &append(const char *sOther, lenpos_t sLenOther=measure_length, char sep = '\0');
+	SString &operator+=(const char *sOther) {
+		return append(sOther, static_cast<lenpos_t>(measure_length));
+	}
+	SString &operator+=(const SString &sOther) {
+		return append(sOther.s, sOther.sLen);
+	}
+	SString &operator+=(char ch) {
+		return append(&ch, 1);
+	}
+	SString &appendwithseparator(const char *sOther, char sep) {
+		return append(sOther, strlen(sOther), sep);
+	}
+	SString &insert(lenpos_t pos, const char *sOther, lenpos_t sLenOther=measure_length);
+
+	/**
+	 * Remove @a len characters from the @a pos position, included.
+	 * Characters at pos + len and beyond replace characters at pos.
+	 * If @a len is 0, or greater than the length of the string
+	 * starting at @a pos, the string is just truncated at @a pos.
+	 */
+	void remove(lenpos_t pos, lenpos_t len);
+
+	SString &change(lenpos_t pos, char ch) {
+		if (pos < sLen) {					// character changed must be in string bounds
+			*(s + pos) = ch;
+		}
+		return *this;
+	}
+	/** Read an integral numeric value from the string. */
+	int value() const {
+		return s ? atoi(s) : 0;
+	}
+	bool startswith(const char *prefix);
+	bool endswith(const char *suffix);
+	int search(const char *sFind, lenpos_t start=0) const;
+	bool contains(const char *sFind) const {
+		return search(sFind) >= 0;
+	}
+	int substitute(char chFind, char chReplace);
+	int substitute(const char *sFind, const char *sReplace);
+	int remove(const char *sFind) {
+		return substitute(sFind, "");
+	}
+};
+
+
+/**
+ * Duplicate a C string.
+ * Allocate memory of the given size, or big enough to fit the string if length isn't given;
+ * then copy the given string in the allocated memory.
+ * @return the pointer to the new string
+ */
+inline char *StringDup(
+	const char *s,			///< The string to duplicate
+	SContainer::lenpos_t len=SContainer::measure_length)	///< The length of memory to allocate. Optional.
+{
+	return SContainer::StringAllocate(s, len);
+}
+
+#endif