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48 lines
1.1 KiB
48 lines
1.1 KiB
#include <stdio.h> /* for ferror() */
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#include <string.h> /* for memset and stuff */
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int
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writeBuffer(char ** buffer, unsigned int * readPos, FILE * wHandle)
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{
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char * nlpos = strchr(*buffer, '\n');
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int written = 0;
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while (NULL != nlpos) {
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unsigned int moveSize, clearSize;
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char * actAddr;
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*nlpos = '\0';
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if (0 != strlen(*buffer)) {
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/* write remaining stuff to file */
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fputs(*buffer, wHandle);
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if (ferror(wHandle)) {
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return -1;
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}
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fputc('\n', wHandle);
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if (ferror(wHandle)) {
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return -1;
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}
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fflush(wHandle);
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if (ferror(wHandle)) {
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return -1;
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}
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written += strlen(*buffer) + 1;
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}
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actAddr = *buffer + *readPos;
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moveSize = actAddr - nlpos - 1;
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clearSize = actAddr - *buffer - moveSize;
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memmove(*buffer, nlpos+1, moveSize);
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memset(*buffer + moveSize, 0, clearSize);
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*readPos = moveSize;
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nlpos = strchr(*buffer, '\n');
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}
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return written;
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}
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