67 lines
1.2 KiB
C
Executable file
67 lines
1.2 KiB
C
Executable file
#!/usr/bin/tcc -run
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/* vim: set syn=c: */
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#include <stdlib.h>
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#include <stdio.h>
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/*
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* 0x09 - horizontal tab
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* 0x0a - linefeed
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* 0x0b - vertical tab
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* 0x0c - form feed
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* 0x0d - carriage return
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* 0x20 - space
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**/
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int
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main() {
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char *linein = NULL, *lineout = NULL;
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size_t len = 0, lastblankchar = 0;
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ssize_t nread;
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unsigned int trimmingleft = 1;
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unsigned int i, j;
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while ((nread = getline(&linein, &len, stdin)) > 0) {
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trimmingleft = 1;
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lastblankchar = j = 0;
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lineout = malloc(nread+1);
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for (i = 0; i < nread; ++i) {
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if (trimmingleft) {
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if(linein[i] != 0x09 &&
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linein[i] != 0x0a &&
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linein[i] != 0x0b &&
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linein[i] != 0x0c &&
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linein[i] != 0x0d &&
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linein[i] != 0x20) {
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trimmingleft = 0;
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}
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}
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if (!trimmingleft){
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if(linein[i] != 0x09 &&
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linein[i] != 0x0a &&
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linein[i] != 0x0b &&
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linein[i] != 0x0c &&
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linein[i] != 0x0d &&
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linein[i] != 0x20) {
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lastblankchar = j + 1;
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}
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}
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if (!trimmingleft) {
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lineout[j++] = linein[i];
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}
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}
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lineout[lastblankchar] = '\n';
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lineout[lastblankchar+1] = '\0';
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printf("%s", lineout);
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free(lineout);
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}
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return 0;
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}
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