56 lines
1.0 KiB
C
56 lines
1.0 KiB
C
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#include <xp/awk/awk.h>
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#include <xp/bas/stdio.h>
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#include <xp/bas/sio.h>
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static xp_ssize_t process_source (int cmd, void* arg, xp_char_t* data, xp_size_t size)
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{
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xp_ssize_t n;
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switch (cmd) {
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case XP_AWK_IO_OPEN:
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case XP_AWK_IO_CLOSE:
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return 0;
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case XP_AWK_IO_DATA:
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if (size < 0) return -1;
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n = xp_sio_getc (xp_sio_in, data);
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if (n == 0) return 0;
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if (n != 1) return -1;
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return n;
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}
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return -1;
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}
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int xp_main (int argc, xp_char_t* argv[])
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{
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xp_awk_t awk;
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#if 0
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if (argc != 2) {
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xp_fprintf (xp_stderr, XP_TEXT("Usage: %s file\n"), argv[0]);
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return -1;
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}
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#endif
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if (xp_awk_open(&awk) == XP_NULL) {
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xp_fprintf (xp_stderr, XP_TEXT("Error: cannot open awk\n"));
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return -1;
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}
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if (xp_awk_attach_source(&awk, process_source, XP_NULL) == -1) {
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xp_awk_close (&awk);
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xp_fprintf (xp_stderr, XP_TEXT("error: cannot attach source\n"));
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return -1;
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}
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if (xp_awk_parse(&awk) == -1) {
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xp_awk_close (&awk);
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xp_fprintf (xp_stderr, XP_TEXT("error: cannot parse program\n"));
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return -1;
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}
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xp_awk_close (&awk);
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return 0;
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}
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