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mateuszvis |
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/* This file is part of the SvarCOM project and is published under the terms
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* of the MIT license.
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*
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mateusz.vi |
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* Copyright (C) 2021-2022 Mateusz Viste
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mateuszvis |
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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mateuszvis |
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/*
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* copy
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*/
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/* /A - Used to copy ASCII files. Applies to the filename preceding it and to
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* all following filenames. Files will be copied until an end-of-file mark is
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* encountered in the file being copied. If an end-of-file mark is encountered
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* in the file, the rest of the file is not copied. DOS will append an EOF
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* mark at the end of the copied file.
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*
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* /B - Used to copy binary files. Applies to the filename preceding it and to
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* all following filenames. Copied files will be read by size (according to
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* the number of bytes indicated in the file`s directory listing). An EOF mark
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* is not placed at the end of the copied file.
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*
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* /V - Checks after the copy to assure that a file was copied correctly. If
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* the copy cannot be verified, the program will display an error message.
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* Using this option will result in a slower copying process.
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mateuszvis |
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*
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* special case: "COPY A+B+C+D" means "append B, C and D files to the A file"
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* if A does not exist, then "append C and D to B", etc.
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mateuszvis |
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*/
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struct copy_setup {
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const char *src[64];
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unsigned short src_count; /* how many sources are declared */
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mateuszvis |
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char cursrc[256]; /* buffer for currently processed src */
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mateuszvis |
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char dst[256];
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unsigned short dstlen;
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mateuszvis |
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char src_asciimode[64];
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char dst_asciimode;
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char last_asciimode; /* /A or /B impacts the file preceding it and becomes the new default for all files that follow */
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char verifyflag;
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char lastitemwasplus;
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mateuszvis |
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unsigned short databufsz;
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char databuf[1];
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mateuszvis |
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};
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mateuszvis |
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mateuszvis |
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/* copies src to dst, overwriting or appending to the destination.
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* - copy is performed in ASCII mode if asciiflag set (stop at first EOF in src
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* and append an EOF in dst).
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* - returns zero on success, DOS error code on error */
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mateuszvis |
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static unsigned short cmd_copy_internal(const char *dst, char dstascii, const char *src, char srcascii, unsigned char appendflag, void *buff, unsigned short buffsz) {
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mateuszvis |
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unsigned short errcode = 0;
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unsigned short srch = 0xffff, dsth = 0xffff;
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_asm {
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/* open src */
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OPENSRC:
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mov ax, 0x3d00 /* DOS 2+ -- open an existing file, read access mode */
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mov dx, src /* ASCIIZ fname */
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int 0x21 /* CF clear on success, handle in AX */
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mateuszvis |
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jc FAIL
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mateuszvis |
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mov [srch], ax /* store src handle in memory */
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/* check appendflag so I know if I have to try opening dst for append */
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xor al, al
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or al, [appendflag]
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jz CREATEDST
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/* try opening dst first if appendflag set */
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mov ax, 0x3d01 /* DOS 2+ -- open an existing file, write access mode */
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mov dx, dst /* ASCIIZ fname */
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int 0x21 /* CF clear on success, handle in AX */
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jc CREATEDST /* failed to open file (file does not exist) */
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mov [dsth], ax /* store dst handle in memory */
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/* got file open, LSEEK to end of it now so future data is appended */
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mov bx, ax /* file handle in BX (was still in AX) */
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mov ax, 0x4202 /* DOS 2+ -- set file pointer to end of file + CX:DX */
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xor cx, cx /* offset zero */
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xor dx, dx /* offset zero */
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int 0x21 /* CF set on error */
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jc FAIL
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jmp COPY
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/* create dst */
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CREATEDST:
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mov ah, 0x3c /* DOS 2+ -- create a file */
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mov dx, dst
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xor cx, cx /* zero out attributes */
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int 0x21 /* handle in AX on success, CF set on error */
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jc FAIL
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mov [dsth], ax /* store dst handle in memory */
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/* perform actual copy */
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COPY:
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/* read a block from src */
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mov ah, 0x3f /* DOS 2+ -- read from file */
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mov bx, [srch]
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mov cx, [buffsz]
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mov dx, [buff] /* DX points to buffer */
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int 0x21 /* CF set on error, bytes read in AX (0=EOF) */
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jc FAIL /* abort on error */
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/* EOF? (ax == 0) */
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mateuszvis |
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test ax, ax
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jz ENDOFFILE
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mateuszvis |
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/* write block of AX bytes to dst */
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mov cx, ax /* block length */
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mov ah, 0x40 /* DOS 2+ -- write to file (CX bytes from DS:DX) */
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mov bx, [dsth] /* file handle */
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/* mov dx, [buff] */ /* DX points to buffer already */
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int 0x21 /* CF clear and AX=CX on success */
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jc FAIL
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cmp ax, cx /* sould be equal, otherwise failed */
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mov ax, 0x08 /* preset to DOS error "Insufficient memory" */
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jne FAIL
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jmp COPY
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ENDOFFILE:
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mateuszvis |
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/* if dst ascii mode -> add an EOF (ASCII mode not supported for the time being) */
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mateuszvis |
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jmp CLOSESRC
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FAIL:
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mov [errcode], ax
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CLOSESRC:
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/* close src and dst */
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mov bx, [srch]
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cmp bx, 0xffff
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je CLOSEDST
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mov ah, 0x3e /* DOS 2+ -- close a file handle */
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int 0x21
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CLOSEDST:
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mov bx, [dsth]
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cmp bx, 0xffff
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je DONE
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mov ah, 0x3e /* DOS 2+ -- close a file handle */
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int 0x21
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DONE:
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}
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return(errcode);
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}
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mateuszvis |
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static enum cmd_result cmd_copy(struct cmd_funcparam *p) {
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mateuszvis |
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struct copy_setup *setup = (void *)(p->BUFFER);
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unsigned short i;
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mateuszvis |
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unsigned short copiedcount_in = 0, copiedcount_out = 0; /* number of input/output copied files */
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struct DTA *dta = (void *)0x80; /* use DTA at default location in PSP */
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mateuszvis |
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if (cmd_ishlp(p)) {
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mateusz.vi |
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nls_outputnl(38,0); /* "Copies one or more files to another location." */
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mateuszvis |
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outputnl("");
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mateusz.vi |
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nls_outputnl(38,1); /* "COPY [/A|/B] source [/A|/B] [+source [/A|/B] [+...]] [destination [/A|/B]] [/V]" */
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mateuszvis |
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outputnl("");
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mateusz.vi |
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nls_outputnl(38,2); /* "source Specifies the file or files to be copied" */
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nls_outputnl(38,3); /* "/A Indicates an ASCII text file" */
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nls_outputnl(38,4); /* "/B Indicates a binary file" */
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nls_outputnl(38,5); /* "destination Specifies the directory and/or filename for the new file(s)" */
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nls_outputnl(38,6); /* "/V Verifies that new files are written correctly" */
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mateuszvis |
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outputnl("");
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mateusz.vi |
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nls_outputnl(38,7); /* "To append files, specify a single file for destination, but multiple (...)" */
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mateuszvis |
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outputnl("");
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mateusz.vi |
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nls_outputnl(38,8); /* "NOTE: /A and /B are no-ops, provided only for compatibility reasons" */
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mateuszvis |
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return(CMD_OK);
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mateuszvis |
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}
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/* parse cmdline and fill the setup struct accordingly */
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memset(setup, 0, sizeof(*setup));
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mateuszvis |
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setup->databufsz = p->BUFFERSZ - sizeof(*setup);
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mateuszvis |
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for (i = 0; i < p->argc; i++) {
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/* switch? */
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if (p->argv[i][0] == '/') {
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if ((imatch(p->argv[i], "/a")) || (imatch(p->argv[i], "/b"))) {
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setup->last_asciimode = 'b';
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if (imatch(p->argv[i], "/a")) setup->last_asciimode = 'a';
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/* */
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mateuszvis |
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if (setup->dst[0] != 0) {
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mateuszvis |
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setup->dst_asciimode = setup->last_asciimode;
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} else if (setup->src_count != 0) {
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setup->src_asciimode[setup->src_count - 1] = setup->last_asciimode;
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}
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} else if (imatch(p->argv[i], "/v")) {
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setup->verifyflag = 1;
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} else {
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mateusz.vi |
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nls_outputnl(0,2); /* "Invalid switch" */
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mateuszvis |
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return(CMD_FAIL);
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mateuszvis |
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}
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continue;
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}
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/* not a switch - must be either a source, a destination or a + */
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if (p->argv[i][0] == '+') {
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/* a plus cannot appear after destination or before first source */
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mateuszvis |
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if ((setup->dst[0] != 0) || (setup->src_count == 0)) {
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mateusz.vi |
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nls_outputnl(0,1); /* "Invalid syntax" */
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mateuszvis |
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return(CMD_FAIL);
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mateuszvis |
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}
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setup->lastitemwasplus = 1;
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/* a plus may be immediately followed by a filename - if so, emulate
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* a new argument */
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if (p->argv[i][1] != 0) {
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p->argv[i] += 1;
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i--;
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}
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continue;
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}
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/* src? (first non-switch or something that follows a +) */
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if ((setup->lastitemwasplus) || (setup->src_count == 0)) {
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setup->src[setup->src_count] = p->argv[i];
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setup->src_asciimode[setup->src_count] = setup->last_asciimode;
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setup->src_count++;
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setup->lastitemwasplus = 0;
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continue;
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}
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/* must be a dst then */
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mateuszvis |
241 |
if (setup->dst[0] != 0) {
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mateusz.vi |
242 |
nls_outputnl(0,1); /* "Invalid syntax" */
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mateuszvis |
243 |
return(CMD_FAIL);
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mateuszvis |
244 |
}
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mateuszvis |
245 |
if (file_truename(p->argv[i], setup->dst) != 0) {
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mateusz.vi |
246 |
nls_outputnl(0,8); /* "Invalid destination" */
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mateuszvis |
247 |
return(CMD_FAIL);
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mateuszvis |
248 |
}
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mateuszvis |
249 |
setup->dst_asciimode = setup->last_asciimode;
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mateuszvis |
250 |
/* if dst is a directory then append a backslash */
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mateuszvis |
251 |
setup->dstlen = path_appendbkslash_if_dir(setup->dst);
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mateuszvis |
252 |
}
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253 |
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/* DEBUG: output setup content ("if 1" to enable) */
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mateuszvis |
255 |
#if 0
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mateuszvis |
256 |
printf("src: ");
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for (i = 0; i < setup->src_count; i++) {
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if (i != 0) printf(", ");
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printf("%s [%c]", setup->src[i], setup->src_asciimode[i]);
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}
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printf("\r\n");
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printf("dst: %s [%c]\r\n", setup->dst, setup->dst_asciimode);
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printf("verify: %s\r\n", (setup->verifyflag)?"ON":"OFF");
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#endif
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265 |
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mateuszvis |
266 |
/* must have at least one source */
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if (setup->src_count == 0) {
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mateusz.vi |
268 |
nls_outputnl(0,7); /* "Required parameter missing" */
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mateuszvis |
269 |
return(CMD_FAIL);
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mateuszvis |
270 |
}
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mateuszvis |
271 |
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mateuszvis |
272 |
/* perform the operation based on setup directives:
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273 |
* iterate over every source and copy it to dest */
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274 |
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for (i = 0; i < setup->src_count; i++) {
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unsigned short t;
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mateuszvis |
277 |
unsigned short cursrclen;
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mateuszvis |
278 |
unsigned short pathendoffset;
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279 |
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280 |
/* resolve truename of src and write it to buffer */
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mateuszvis |
281 |
t = file_truename(setup->src[i], setup->cursrc);
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mateuszvis |
282 |
if (t != 0) {
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283 |
output(setup->src[i]);
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output(" - ");
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mateuszvis |
285 |
nls_outputnl_doserr(t);
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mateuszvis |
286 |
continue;
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287 |
}
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mateuszvis |
288 |
cursrclen = strlen(setup->cursrc); /* remember cursrc length */
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mateuszvis |
289 |
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290 |
/* if length zero, skip (not sure why this would be possible, though) */
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mateuszvis |
291 |
if (cursrclen == 0) continue;
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mateuszvis |
292 |
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293 |
/* if src does not end with a backslash AND it is a directory then append a backslash */
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mateuszvis |
294 |
cursrclen = path_appendbkslash_if_dir(setup->cursrc);
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mateuszvis |
295 |
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296 |
/* if src ends with a '\' then append *.* */
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mateuszvis |
297 |
if (setup->cursrc[cursrclen - 1] == '\\') {
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298 |
strcat(setup->cursrc, "*.*");
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mateuszvis |
299 |
}
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300 |
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mateuszvis |
301 |
/* remember where the path in cursrc ends */
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302 |
for (t = 0; setup->cursrc[t] != 0; t++) {
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303 |
if (setup->cursrc[t] == '\\') pathendoffset = t + 1;
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mateuszvis |
304 |
}
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305 |
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306 |
/* */
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mateuszvis |
307 |
if (findfirst(dta, setup->cursrc, 0) != 0) {
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409 |
mateuszvis |
308 |
continue;
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309 |
}
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310 |
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311 |
do {
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412 |
mateuszvis |
312 |
char appendflag;
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409 |
mateuszvis |
313 |
if (dta->attr & DOS_ATTR_DIR) continue; /* skip directories */
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314 |
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315 |
/* compute full path/name of the file */
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503 |
mateuszvis |
316 |
strcpy(setup->cursrc + pathendoffset, dta->fname);
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409 |
mateuszvis |
317 |
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|
318 |
/* if there was no destination, then YOU are the destination now!
|
|
|
319 |
* this handles situations like COPY a.txt+b.txt+c.txt */
|
|
|
320 |
if (setup->dst[0] == NULL) {
|
503 |
mateuszvis |
321 |
strcpy(setup->dst, setup->cursrc);
|
409 |
mateuszvis |
322 |
setup->dstlen = strlen(setup->dst);
|
|
|
323 |
copiedcount_in++;
|
|
|
324 |
copiedcount_out++;
|
|
|
325 |
continue;
|
|
|
326 |
}
|
|
|
327 |
|
|
|
328 |
/* is dst ending with a backslash? then append fname to it */
|
|
|
329 |
if (setup->dst[setup->dstlen - 1] == '\\') strcpy(setup->dst + setup->dstlen, dta->fname);
|
|
|
330 |
|
503 |
mateuszvis |
331 |
/* now cursrc contains the full source and dst contains the full dest... COPY TIME! */
|
409 |
mateuszvis |
332 |
|
|
|
333 |
/* if dst file exists already -> overwrite it or append?
|
|
|
334 |
- if dst is a dir (dstlen-1 points at a \\) -> overwrite
|
|
|
335 |
- otherwise: if copiedcount_in==0 overwrite, else append */
|
503 |
mateuszvis |
336 |
output(setup->cursrc);
|
409 |
mateuszvis |
337 |
if ((setup->dst[setup->dstlen - 1] == '\\') || (copiedcount_in == 0)) {
|
412 |
mateuszvis |
338 |
appendflag = 0;
|
409 |
mateuszvis |
339 |
output(" > ");
|
|
|
340 |
copiedcount_out++;
|
|
|
341 |
} else {
|
412 |
mateuszvis |
342 |
appendflag = 1;
|
409 |
mateuszvis |
343 |
output(" >> ");
|
|
|
344 |
}
|
|
|
345 |
outputnl(setup->dst);
|
|
|
346 |
|
503 |
mateuszvis |
347 |
t = cmd_copy_internal(setup->dst, 0, setup->cursrc, 0, appendflag, setup->databuf, setup->databufsz);
|
412 |
mateuszvis |
348 |
if (t != 0) {
|
538 |
mateuszvis |
349 |
nls_outputnl_doserr(t);
|
533 |
mateuszvis |
350 |
return(CMD_FAIL);
|
412 |
mateuszvis |
351 |
}
|
|
|
352 |
|
409 |
mateuszvis |
353 |
copiedcount_in++;
|
|
|
354 |
} while (findnext(dta) == 0);
|
|
|
355 |
|
|
|
356 |
}
|
|
|
357 |
|
990 |
mateusz.vi |
358 |
sprintf(setup->databuf, svarlang_str(38,9)/*"%u file(s) copied"*/, copiedcount_out);
|
409 |
mateuszvis |
359 |
outputnl(setup->databuf);
|
|
|
360 |
|
533 |
mateuszvis |
361 |
return(CMD_OK);
|
403 |
mateuszvis |
362 |
}
|