update.txt

[随书类]Dos6.0源代码

SUMMARY upd drive extention filename fileext path

[N.B. the spelling is extenTion not extenSion for hysterical reasons.]

#include <tools.h>

int upd(pstrDef, pstrUpd, pstrDst)
char *pstrDef;
char *pstrUpd;
char *pstrDst;

int drive(pstrSrc, pstrDst)
char *pstrSrc;
char *pstrDst;

int extention(pstrSrc, pstrDst)
char *pstrSrc;
char *pstrDst;

int filename(pstrSrc, pstrDst)
char *pstrSrc;
char *pstrDst;

int fileext(pstrSrc, pstrDst)
char *pstrSrc;
char *pstrDst;

int path(pstrSrc, pstrDst)
char *pstrSrc;
char *pstrDst;

DESCRIPTION

upd constructs a destination string from parts supplied by the definition and
update strings.  The parts are DRIVE, PATH, FILENAME and EXTENTION.  The
update has priority over the definition as a source of parts.  The return
value indicates which parts, if any, were copied.

drive, path, filename, extension, fileext copy the corresponding parts, if
any from the source to the destination and return non-zero if a part was
copied and zero if no part copied.

DRIVE is the initial string part upto and including the first colon.  If
there is no colon, then there is no DRIVE part.

PATH starts after the DRIVE part, if any, and goes up to and include last
backslash character.

FILENAME starts after PATH and goes up to but does NOT include a period.

EXTENTION starts after filename with the period.

FILEEXT is FILENAME and EXTENSION

The following is the output from the example below.  The definition
is c:\tools\h\tools.h.

drive	  c:
path	  \tools\h\
filename  tools
extention .h
fileext   tools.h
upd	  c:\temp\test.h

RETURN VALUE

upd returns the OR of the flags U_DRIVE, U_PATH, U_NAME, U_EXT, indicating
which parts were returned.  TESTFLAG can be used to test the return value
for the flags.

drive, path, filename, extension, fileext return non-zero if a part was
copied and zero if no part copied.

IMPLEMENTATION


SEE ALSO


NOTE


EXAMPLE
#include <tools.h>

/* N.B. in string constants \\ represents a single \ */
char str[] = "c:\\tools\\h\\tools.h";

DoPrint(pstr1, pstr2)
char *pstr1, *pstr2;
{
    printf("%s%s\n", pstr1, pstr2);
}

main(c, argv)
int c;
char *argv[];
{
    char buf[MAXPATHLEN];

    drive(str, buf);		    DoPrint("drive     ", buf);
    path(str, buf);		    DoPrint("path      ", buf);
    filename(str, buf); 	    DoPrint("filename  ", buf);
    extention(str, buf);	    DoPrint("extention ", buf);
    fileext(str, buf);		    DoPrint("fileext   ", buf);
    upd(str, "\\temp\\test", buf);  DoPrint("upd       ", buf);
}