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Rev 538 Rev 989
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/* This file is part of the SvarCOM project and is published under the terms
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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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 * of the MIT license.
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 *
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 *
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 * Copyright (C) 2021 Mateusz Viste
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 * Copyright (C) 2021-2022 Mateusz Viste
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 *
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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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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 * 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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 * 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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 * 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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 * 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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 * Software is furnished to do so, subject to the following conditions:
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 *
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 *
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 * The above copyright notice and this permission notice shall be included in
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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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 * all copies or substantial portions of the Software.
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 *
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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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * DEALINGS IN THE SOFTWARE.
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 */
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 */
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/*
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/*
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 * type
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 * type
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 */
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 */
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static enum cmd_result cmd_type(struct cmd_funcparam *p) {
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static enum cmd_result cmd_type(struct cmd_funcparam *p) {
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  char *buff = p->BUFFER;
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  char *buff = p->BUFFER;
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  const char *fname = p->argv[0];
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  const char *fname = p->argv[0];
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  unsigned short err = 0;
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  unsigned short err = 0;
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  if (cmd_ishlp(p)) {
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  if (cmd_ishlp(p)) {
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    outputnl("Displays the contents of a text file.");
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    nls_outputnl(21,0); /* "Displays the contents of a text file." */
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    outputnl("");
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    outputnl("");
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    outputnl("TYPE [drive:][path]filename");
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    nls_outputnl(21,1); /* "TYPE [drive:][path]filename" */
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    return(CMD_OK);
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    return(CMD_OK);
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  }
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  }
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  if (p->argc == 0) {
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  if (p->argc == 0) {
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    outputnl("Required parameter missing");
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    nls_outputnl(0,7); /* "Required parameter missing" */
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    return(CMD_FAIL);
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    return(CMD_FAIL);
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  }
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  }
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  if (p->argc > 1) {
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  if (p->argc > 1) {
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    outputnl("Too many parameters");
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    nls_outputnl(0,4); /* "Too many parameters" */
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    return(CMD_FAIL);
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    return(CMD_FAIL);
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  }
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  }
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  /* if here then display the file */
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  /* if here then display the file */
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  _asm {
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  _asm {
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    push ax
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    push ax
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    push bx
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    push bx
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    push cx
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    push cx
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    push dx
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    push dx
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    push si
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    push si
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    mov ax, 0x3d00 /* open file via handle, access mode in AL (0 = read) */
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    mov ax, 0x3d00 /* open file via handle, access mode in AL (0 = read) */
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    mov dx, fname
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    mov dx, fname
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    int 0x21       /* file handle in ax on success (CF clear) */
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    int 0x21       /* file handle in ax on success (CF clear) */
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    jnc FILE_OPEN_OK
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    jnc FILE_OPEN_OK
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    mov [err], ax  /* on error AX contains the DOS err code */
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    mov [err], ax  /* on error AX contains the DOS err code */
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    jmp FOPENFAIL
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    jmp FOPENFAIL
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    FILE_OPEN_OK:
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    FILE_OPEN_OK:
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    /* copy obtained file handle to BX */
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    /* copy obtained file handle to BX */
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    mov bx, ax
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    mov bx, ax
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    READNEXTBLOCK:
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    READNEXTBLOCK:
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    /* read file block by block */
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    /* read file block by block */
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    mov cx, 1024   /* read 1K at a time */
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    mov cx, 1024   /* read 1K at a time */
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    mov dx, buff
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    mov dx, buff
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    mov ah, 0x3f   /* read CX bytes from file handle in BX and write to DS:DX */
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    mov ah, 0x3f   /* read CX bytes from file handle in BX and write to DS:DX */
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    int 0x21       /* CF set on error, AX=errno or AX=number of bytes read */
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    int 0x21       /* CF set on error, AX=errno or AX=number of bytes read */
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    jc GOTERROR    /* abort on error */
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    jc GOTERROR    /* abort on error */
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    test ax, ax    /* EOF? */
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    test ax, ax    /* EOF? */
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    jz ENDFILE
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    jz ENDFILE
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    /* display read block (AX=len) */
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    /* display read block (AX=len) */
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    mov si, dx     /* preset DS:SI to DS:DX (DL will be reused soon) */
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    mov si, dx     /* preset DS:SI to DS:DX (DL will be reused soon) */
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    mov cx, ax     /* set loop count to CX */
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    mov cx, ax     /* set loop count to CX */
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    mov ah, 0x02   /* write character in DL to stdout */
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    mov ah, 0x02   /* write character in DL to stdout */
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    NEXTCHAR:
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    NEXTCHAR:
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    mov dl, [si]
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    mov dl, [si]
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    inc si
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    inc si
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    int 0x21
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    int 0x21
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    loopnz NEXTCHAR /* CX-- ; jnz NEXTCHAR (display CX characters) */
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    loopnz NEXTCHAR /* CX-- ; jnz NEXTCHAR (display CX characters) */
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    /* read (and display) next block */
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    /* read (and display) next block */
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    jmp READNEXTBLOCK
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    jmp READNEXTBLOCK
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    GOTERROR:
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    GOTERROR:
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    mov [err], ax
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    mov [err], ax
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    ENDFILE:
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    ENDFILE:
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    /* close file */
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    /* close file */
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    mov ah, 0x3e   /* close file handle (file handle already in BX) */
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    mov ah, 0x3e   /* close file handle (file handle already in BX) */
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    int 0x21
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    int 0x21
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    FOPENFAIL:
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    FOPENFAIL:
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    pop si
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    pop si
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    pop dx
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    pop dx
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    pop cx
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    pop cx
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    pop bx
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    pop bx
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    pop ax
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    pop ax
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  }
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  }
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  if (err != 0) {
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  if (err != 0) {
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    nls_outputnl_doserr(err);
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    nls_outputnl_doserr(err);
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    return(CMD_FAIL);
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    return(CMD_FAIL);
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  }
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  }
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  return(CMD_OK);
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  return(CMD_OK);
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}
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}
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