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#ifndef lint |
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static const char RCSid[] = "$Id: cvtcmd.c,v 3.2 2016/02/02 18:05:31 greg Exp $"; |
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#endif |
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/* |
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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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|
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#include "paths.h" |
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|
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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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|
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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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|
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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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} |
