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https://github.com/ptitSeb/Serious-Engine
synced 2024-11-22 18:30:27 +01:00
Simplify dealing with empty files.
Why write a parser when you already have a perfectly good one already? :)
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@ -228,110 +228,6 @@ void ReplaceFile(const char *strOld, const char *strNew)
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rename(strNew, strOld);
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}
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enum ESStatus
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{
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/* Appears to be non-empty, ready to parse. */
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Good,
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/* Appears to be empty, ignore it. */
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Empty,
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/* Error occured during status check. */
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Error,
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};
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/* Determine whether or not our target ES file is indeed valid input. */
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ESStatus GetESStatus()
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{
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ESStatus result = ESStatus::Empty;
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// Read a temporary buffer of the entire file contents
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fseek(_fInput, 0, SEEK_END);
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size_t length = ftell(_fInput);
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// Hard-stop on Empty out of paranoia
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if (length == 0)
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return result;
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char* temporaryBuffer = (char*)malloc(length);
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if (!temporaryBuffer)
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return ESStatus::Error;
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fseek(_fInput, 0, SEEK_SET);
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fread(temporaryBuffer, length, 1, _fInput);
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fseek(_fInput, 0, SEEK_SET);
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// Loop through each line
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char* currentSequence = strtok(temporaryBuffer, "\n");
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// No newlines, but it might still be valid.
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if (!currentSequence)
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currentSequence = temporaryBuffer;
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bool inBlockComment = false;
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do
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{
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size_t sequenceLength = strlen(currentSequence);
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for (size_t iteration = 0; iteration < sequenceLength; iteration++)
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{
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// If we're still in a block comment, find the closing */
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if (inBlockComment)
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{
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char* blockClosing = strstr(currentSequence, "*/");
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if (!blockClosing)
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break;
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else
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{
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inBlockComment = false;
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iteration = ((size_t)blockClosing - (size_t)currentSequence) + 2;
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}
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}
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// If we find a // sequence, simply skip this line
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if (currentSequence[iteration] == '/' && currentSequence[iteration + 1] == '/')
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break;
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// If we find a /* on this line but not a closing */, skip this line
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if (currentSequence[iteration] == '/' && currentSequence[iteration + 1] == '*')
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{
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// Is there a closing */ on this line?
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char* blockClosing = strstr(currentSequence, "*/");
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if (!blockClosing)
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{
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inBlockComment = true;
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break;
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}
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else
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{
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iteration = ((size_t)blockClosing - (size_t)currentSequence) + 2;
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inBlockComment = false;
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continue;
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}
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}
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if (iteration >= sequenceLength)
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break;
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// If we got to this point, we should be able to read only a number on this line
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for (size_t checkIteration = 0; checkIteration < sequenceLength; checkIteration++)
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if (currentSequence[checkIteration] != '\n' && currentSequence[checkIteration] != 0x20 && !isdigit(currentSequence[checkIteration]))
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{
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result = ESStatus::Error;
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break;
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}
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else if (currentSequence[checkIteration] != '\n' && currentSequence[checkIteration] != 0x20)
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result = ESStatus::Good;
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free(temporaryBuffer);
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return result;
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}
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}
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while(currentSequence = strtok(NULL, "\n"));
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return result;
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}
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/* Replace a file with a new file if they are different.
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* Used to keep .h files from constantly changing when you change the implementation.
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*/
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@ -389,24 +285,6 @@ int main(int argc, char *argv[])
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// open the input file
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_fInput = FOpen(argv[1], "r");
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// Make sure we're loading a valid ES file
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ESStatus status = GetESStatus();
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switch (status)
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{
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case ESStatus::Empty:
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{
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fclose(_fInput);
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return EXIT_SUCCESS;
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}
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case ESStatus::Error:
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{
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fclose(_fInput);
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printf("Ecc encountered an error during the es verification.\n");
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return EXIT_FAILURE;
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}
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}
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//printf("%s\n", argv[1]);
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// open all the output files
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char *strImplementation = ChangeFileNameExtension(argv[1], ".cpp_tmp");
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@ -243,7 +243,8 @@ void DeclareFeatureProperties(void)
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* Global structure of the source file.
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*/
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program
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: c_int {
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: /* empty file */ {}
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| c_int {
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int iID = atoi($1.strString);
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if(iID>32767) {
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yyerror("Maximum allowed id for entity source file is 32767");
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