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mateuszvis |
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/*
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* rename/ren
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*/
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static int cmd_rename(struct cmd_funcparam *p) {
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char *src = p->BUFFER;
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char *dst = p->BUFFER + (BUFFER_SIZE / 4);
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char *buff1 = p->BUFFER + (BUFFER_SIZE / 4 * 2);
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char *buff2 = p->BUFFER + (BUFFER_SIZE / 4 * 3);
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unsigned short i, fnameoffset;
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struct DTA *dta = (void *)0x80; /* use default DTA in PSP */
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if (cmd_ishlp(p)) {
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outputnl("Renames a file or files");
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outputnl("");
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outputnl("RENAME [drive:][path]filename1 filename2");
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outputnl("REN [drive:][path]filename1 filename2");
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outputnl("");
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outputnl("Note that you cannot specify a new drive or path for your destination file.");
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outputnl("Use MOVE to rename a directory, or to move files from one directory to another.");
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return(-1);
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}
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/* I expect exactly two arguments */
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if (p->argc != 2) {
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outputnl("Invalid syntax");
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return(-1);
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}
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/* convert src to truename format */
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i = file_truename(p->argv[0], src);
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if (i != 0) {
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outputnl(doserr(i));
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return(-1);
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}
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/* copy src path to buffers and remember where the filename starts */
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fnameoffset = 0;
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for (i = 0;; i++) {
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buff1[i] = src[i];
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buff2[i] = src[i];
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if (buff1[i] == '\\') fnameoffset = i + 1;
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if (buff1[i] == 0) break;
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}
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/* now append dst filename to the buffer and validate it: cannot contain backslash, slash or ':' */
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for (i = 0;; i++) {
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switch (p->argv[1][i]) {
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case ':':
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case '\\':
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case '/':
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outputnl("Invalid destination");
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return(-1);
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}
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buff1[fnameoffset + i] = p->argv[1][i];
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if (buff1[fnameoffset + i] == 0) break;
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}
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/* apply truename to dest to normalize wildcards into ? chars */
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i = file_truename(buff1, dst);
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if (i != 0) {
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outputnl(doserr(i));
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return(-1);
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}
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/* we're good to go, src and dst should look somehow like that now:
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* src = C:\TEMP\PATH\FILE????.TXT
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* dst = C:\TEMP\PATH\FILE????.DOC
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* buff1 = C:\TEMP\PATH\
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* buff2 = C:\TEMP\PATH\
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* fnameoffset = 13
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*
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* src is used for FindFirst/FindNext iterations, then buff1 is filled with
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* the source filename found by FindFirst/FindNext and buff2 is filled with
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* the destination file (with ?'s replaced by whatever is found at the same
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* location in buff1).
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*/
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i = findfirst(dta, src, 0);
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if (i != 0) outputnl(doserr(i));
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while (i == 0) {
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/* write found fname into buff1 and dst fname into buff2 - both in FCB
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* format (MYFILE EXT) so it is easy to compare them */
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file_fname2fcb(buff1 + fnameoffset, dta->fname);
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file_fname2fcb(buff2 + fnameoffset, dst + fnameoffset);
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/* scan buff2 fname for '?' and replace them with whatever is in buff1 */
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for (i = fnameoffset; buff2[i] != 0; i++) {
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if (buff2[i] == '?') buff2[i] = buff1[i];
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}
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/* fill buff1 with the 8+3 found file and convert the one in buff2 to 8+3 as well */
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file_fcb2fname(buff1 + fnameoffset, buff2 + fnameoffset);
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strcpy(buff2 + fnameoffset, buff1 + fnameoffset);
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strcpy(buff1 + fnameoffset, dta->fname);
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/* buff1 contains now a fully resolved source and buff2 a proper destination */
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#if 0 /* DEBUG ("if 1" to enable) */
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output(buff1);
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output(" -> ");
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outputnl(buff2);
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#endif
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/* call DOS to do the actual job */
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i = 0;
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_asm {
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push ax
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push di
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push dx
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push es
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mov ah, 0x56 /* rename file: DS:DX=ASCIIZ of src ES:DI=ASCIIZ of dst */
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push ds
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pop es
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mov dx, buff1
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mov di, buff2
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int 0x21 /* CF clear on success, otherwise err code in AX */
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jnc DONE
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mov [i], ax /* copy error code to i */
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DONE:
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pop es
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pop dx
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pop di
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pop ax
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}
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if (i != 0) {
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output(buff1 + fnameoffset);
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output(" -> ");
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output(buff2 + fnameoffset);
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output(" ");
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outputnl(doserr(i));
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}
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/* next please */
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i = findnext(dta);
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}
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return(-1);
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}
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