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- _PORTING UNIX APPLICATIONS TO DOS_
- by David N. Glass
-
-
- Figure 1: Macros to handle text and binary files in DOS.
-
- #ifdef DOS
- # define READ_BIN "rb"
- # define READ_TXT "r"
- # define WRITE_BIN "wb"
- # define WRITE_TXT "w"
- #else /* the unix way */
- # define READ_BIN "r"
- # define READ_TXT "r"
- # define WRITE_BIN "w"
- # define WRITE_TXT
- #endif /* DOS */
-
-
-
- Figure 2: Mapping the UNIX SIGALRM to a DOS user-defined signal.
-
- #ifdef DOS
- # define SIGALRM SIGUSR1
- #endif /*DOS*/
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- Figure 3. Writing files using a specified file handle.
-
- write_files(fp, buffer, bytes)
- int fp;
- char *buffer;
- int bytes;
- {
- if (bytes > 0) write(fp, buffer, bytes);
- }
-
-
-
- Figure 4: Mapping WRIT_TTY to either DOS or UNIX I/O calls.
-
- #ifdef DOS
- # define WRITE_TTY write_port
- #else /* unix */
- # define WRITE_TTY write
- #endif /* DOS */
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