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Add more stuff to C string API
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@ -107,7 +107,7 @@ void Block_ResetProps(BlockID block) {
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Int32 Block_FindID(String* name) {
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Int32 block;
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for (block = BlockID_Air; block < Block_Count; block++) {
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if (String_CaselessEquals(&Block_Name[block], name)) return i;
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if (String_CaselessEquals(&Block_Name[block], name)) return block;
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}
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return -1;
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}
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@ -1,90 +1,124 @@
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#include "String.h"
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#include "Funcs.h"
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String String_FromEmptyBuffer(UInt8* buffer, UInt16 capacity) {
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String str;
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str.buffer = buffer;
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str.capacity = capacity;
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str.length = 0;
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return str;
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}
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String String_FromRawBuffer(UInt8* buffer, UInt16 capacity) {
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String str = String_FromEmptyBuffer(buffer, capacity);
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// Need to set region occupied by string to NUL for interop with native APIs
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for (Int32 i = 0; i < capacity + 1; i++) {
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buffer[i] = 0;
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}
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return str;
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}
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String String_FromConstant(const UInt8* buffer) {
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UInt16 length = 0;
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UInt8 cur = 0;
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UInt8* ptr = buffer;
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while ((cur = *buffer) != 0) {
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length++; buffer++;
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}
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String str;
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str.buffer = ptr;
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str.capacity = length;
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str.length = length;
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return str;
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}
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String String_MakeNull() {
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String str;
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str.buffer = NULL;
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str.capacity = 0;
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str.length = 0;
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return str;
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}
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bool String_Equals(String* a, String* b) {
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if (a->length != b->length) return false;
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for (Int32 i = 0; i < a->length; i++) {
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if (a->buffer[i] != b->buffer[i]) return false;
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}
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return true;
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}
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bool String_CaselessEquals(String* a, String* b) {
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if (a->length != b->length) return false;
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for (Int32 i = 0; i < a->length; i++) {
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UInt8 aCur = a->buffer[i];
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UInt8 bCur = b->buffer[i];
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if (Char_IsUpper(aCur)) aCur = Char_ToLower(aCur);
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if (Char_IsUpper(bCur)) bCur = Char_ToLower(bCur);
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if (aCur != bCur) return false;
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}
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return true;
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}
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bool String_Append(String* str, UInt8 c) {
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if (str->length == str->capacity) return false;
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str->buffer[str->length] = c;
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str->length++;
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return true;
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}
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Int32 String_IndexOf(String* str, UInt8 c, Int32 offset) {
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for (Int32 i = offset; i < str->length; i++) {
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if (str->buffer[i] == c) return i;
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}
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return -1;
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}
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UInt8 String_CharAt(String* str, Int32 offset) {
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if (offset < 0 || offset >= str->length) return 0;
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return str->buffer[offset];
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#include "String.h"
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#include "Funcs.h"
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String String_FromEmptyBuffer(UInt8* buffer, UInt16 capacity) {
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String str;
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str.buffer = buffer;
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str.capacity = capacity;
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str.length = 0;
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return str;
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}
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String String_FromRawBuffer(UInt8* buffer, UInt16 capacity) {
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String str = String_FromEmptyBuffer(buffer, capacity);
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// Need to set region occupied by string to NUL for interop with native APIs
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for (Int32 i = 0; i < capacity + 1; i++) {
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buffer[i] = 0;
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}
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}
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String String_FromConstant(const UInt8* buffer) {
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UInt16 length = 0;
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UInt8 cur = 0;
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UInt8* ptr = buffer;
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while ((cur = *buffer) != 0) {
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length++; buffer++;
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}
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String str;
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str.buffer = ptr;
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str.capacity = length;
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str.length = length;
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return str;
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}
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String String_MakeNull() {
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String str;
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str.buffer = NULL;
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str.capacity = 0;
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str.length = 0;
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return str;
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}
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bool String_Equals(String* a, String* b) {
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if (a->length != b->length) return false;
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for (Int32 i = 0; i < a->length; i++) {
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if (a->buffer[i] != b->buffer[i]) return false;
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}
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return true;
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}
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bool String_CaselessEquals(String* a, String* b) {
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if (a->length != b->length) return false;
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for (Int32 i = 0; i < a->length; i++) {
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UInt8 aCur = a->buffer[i];
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UInt8 bCur = b->buffer[i];
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if (Char_IsUpper(aCur)) aCur = Char_ToLower(aCur);
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if (Char_IsUpper(bCur)) bCur = Char_ToLower(bCur);
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if (aCur != bCur) return false;
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}
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return true;
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}
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bool String_Append(String* str, UInt8 c) {
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if (str->length == str->capacity) return false;
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str->buffer[str->length] = c;
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str->length++;
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return true;
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}
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bool String_AppendNum(String* str, Int64 num) {
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UInt8 numBuffer[20];
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Int32 numLen = MakeNum(num, numBuffer);
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for (Int32 i = numLen - 1; i >= 0; i--) {
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if (!String_Append(str, numBuffer[i])) return false;
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}
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return true;
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}
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bool String_AppendPaddedNum(String* str, Int64 num, Int32 minDigits) {
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UInt8 numBuffer[20];
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for (Int32 i = 0; i < minDigits; i++) {
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numBuffer[i] = '0';
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}
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Int32 numLen = MakeNum(num, numBuffer);
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if (numLen < minDigits) numLen = minDigits;
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for (Int32 i = numLen - 1; i >= 0; i--) {
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if (!String_Append(str, numBuffer[i])) return false;
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}
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return true;
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}
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static Int32 String_MakeNum(Int64 num, UInt8* numBuffer) {
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Int32 len = 0;
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do {
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numBuffer[len] = (char)('0' + (num % 10)); num /= 10;
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len++;
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} while (num > 0);
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return len;
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}
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Int32 String_IndexOf(String* str, UInt8 c, Int32 offset) {
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for (Int32 i = offset; i < str->length; i++) {
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if (str->buffer[i] == c) return i;
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}
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return -1;
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}
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UInt8 String_CharAt(String* str, Int32 offset) {
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if (offset < 0 || offset >= str->length) return 0;
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return str->buffer[offset];
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}
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@ -1,51 +1,60 @@
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#ifndef CS_STRING_H
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#define CS_STRING_H
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#include "Typedefs.h"
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/* Implements operations for a string.
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Copyright 2017 ClassicalSharp | Licensed under BSD-3
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*/
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#define String_BufferSize(n) (n + 1)
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typedef struct String {
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/* Pointer to raw characters. Size is capacity + 1, as buffer is null terminated. */
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UInt8* buffer;
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/* Number of characters used. */
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UInt16 length;
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/* Max number of characters that can be in buffer. */
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UInt16 capacity;
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} String;
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/* Constructs a new string, pointing a buffer consisting purely of NULL characters. */
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String String_FromEmptyBuffer(UInt8* buffer, UInt16 capacity);
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/* Constructs a new string, pointing a buffer consisting of arbitary data.
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NOTE: This method sets the bytes occupied by the string to NUL. */
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String String_FromRawBuffer(UInt8* buffer, UInt16 capacity);
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/* Constructs a new string from a constant readonly string. */
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String String_FromConstant(const UInt8* buffer);
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/* Makes an empty string that points to nowhere. */
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String String_MakeNull();
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/* Returns whether two strings have same contents. */
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bool String_Equals(String* a, String* b);
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/* Returns whether two strings have same case-insensitive contents. */
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bool String_CaselessEquals(String* a, String* b);
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/* Attempts to append a character to the end of a string. */
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bool String_Append(String* str, UInt8 c);
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/* Finds the first index of c in given string, -1 if not found. */
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int String_IndexOf(String* str, UInt8 c, Int32 offset);
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/* Gets the character at the given index in the string. */
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UInt8 String_CharAt(String* str, Int32 offset);
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#ifndef CS_STRING_H
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#define CS_STRING_H
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#include "Typedefs.h"
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/* Implements operations for a string.
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Copyright 2017 ClassicalSharp | Licensed under BSD-3
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*/
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#define String_BufferSize(n) (n + 1)
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typedef struct String {
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/* Pointer to raw characters. Size is capacity + 1, as buffer is null terminated. */
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UInt8* buffer;
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/* Number of characters used. */
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UInt16 length;
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/* Max number of characters that can be in buffer. */
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UInt16 capacity;
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} String;
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/* Constructs a new string, pointing a buffer consisting purely of NULL characters. */
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String String_FromEmptyBuffer(UInt8* buffer, UInt16 capacity);
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/* Constructs a new string, pointing a buffer consisting of arbitary data.
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NOTE: This method sets the bytes occupied by the string to NUL. */
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String String_FromRawBuffer(UInt8* buffer, UInt16 capacity);
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/* Constructs a new string from a constant readonly string. */
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String String_FromConstant(const UInt8* buffer);
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/* Makes an empty string that points to nowhere. */
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String String_MakeNull();
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/* Returns whether two strings have same contents. */
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bool String_Equals(String* a, String* b);
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/* Returns whether two strings have same case-insensitive contents. */
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bool String_CaselessEquals(String* a, String* b);
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/* Attempts to append a character to the end of a string. */
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bool String_Append(String* str, UInt8 c);
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/* Attempts to append an integer value to the end of a string. */
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bool String_AppendNum(String* str, Int64 num);
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/* Attempts to append an integer value to the end of a string, padding left with 0. */
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bool String_AppendPaddedNum(String* str, Int64 num, Int32 minDigits);
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static Int32 String_MakeNum(Int64 num, UInt8* numBuffer);
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/* Finds the first index of c in given string, -1 if not found. */
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int String_IndexOf(String* str, UInt8 c, Int32 offset);
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/* Gets the character at the given index in the string. */
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UInt8 String_CharAt(String* str, Int32 offset);
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#endif
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