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greg |
3.2 |
#ifndef lint
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greg |
3.3 |
static const char RCSid[] = "$Id: cvtcmd.c,v 3.2 2016/02/02 18:05:31 greg Exp $";
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greg |
3.2 |
#endif
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greg |
3.1 |
/*
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* Convert a set of arguments into a command line for pipe() or system()
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*
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* Defines in paths.h
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*/
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#include "paths.h"
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/* Check if any of the characters in str2 are found in str1 */
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int
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matchany(const char *str1, const char *str2)
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{
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while (*str1) {
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const char *cp = str2;
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while (*cp)
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if (*cp++ == *str1)
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return(*str1);
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++str1;
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}
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return(0);
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}
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/* Convert a set of arguments into a command line, being careful of specials */
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char *
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convert_commandline(char *cmd, const int len, char *av[])
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{
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char *cp;
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for (cp = cmd; *av != NULL; av++) {
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const int n = strlen(*av);
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if (cp+n >= cmd+(len-3))
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return(NULL);
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if (matchany(*av, SPECIALS)) {
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const int quote =
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#ifdef ALTQUOT
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strchr(*av, QUOTCHAR) ? ALTQUOT :
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#endif
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QUOTCHAR;
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*cp++ = quote;
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strcpy(cp, *av);
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cp += n;
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*cp++ = quote;
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} else {
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strcpy(cp, *av);
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cp += n;
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}
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*cp++ = ' ';
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}
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if (cp <= cmd)
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return(NULL);
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*--cp = '\0';
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return(cmd);
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}
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