procps/proc/output.c

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2002-02-02 04:17:29 +05:30
/*
Some output conversion routines for libproc
Copyright (C) 1996, Charles Blake. See COPYING for details.
*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
/* output a string, converting unprintables to octal as we go, and stopping after
processing max chars of output (accounting for expansion due to octal rep).
*/
unsigned print_str(FILE* file, char *s, unsigned max) {
int i;
for (i=0; s[i] && i < max; i++)
if (isprint(s[i]) || s[i] == ' ')
fputc(s[i], file);
else {
if (max - i > 3) {
fprintf(file, "\\%03o", (unsigned char)s[i]);
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i += 3; /* 4 printed, but i counts one */
} else
return max - i;
}
return max - i;
}
/* output an argv style NULL-terminated string list, converting unprintables
to octal as we go, separating items of the list by 'sep' and stopping after
processing max chars of output (accounting for expansion due to octal rep).
*/
unsigned print_strlist(FILE* file, char **strs, char* sep, unsigned max) {
int i, n, seplen = strlen(sep);
for (n=0; *strs && n < max; strs++) {
for (i=0; strs[0][i] && n+i < max; i++)
if (isprint(strs[0][i]) || strs[0][i] == ' ')
fputc(strs[0][i], file);
else {
if (max-(n+i) > 3) {
fprintf(file, "\\%03o", (unsigned char)strs[0][i]);
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n += 3; /* 4 printed, but i counts one */
} else
return max - n;
}
n += i;
if (n + seplen < max) {
fputs(sep, file);
n += seplen;
} else
return max - n;
}
return max - n;
}