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Throw some comments around the FST table for tokenizing command line.

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This is slated for replacement, but it will help to be better documented first.
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Stu Black
2025-10-26 10:10:19 -04:00
parent 466324b743
commit 4e018fb526
1 changed files with 10 additions and 9 deletions
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19
WINGs/string.c
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@@ -31,15 +31,16 @@ typedef struct {
} DFA;
static DFA mtable[9][6] = {
{{3, 1}, {0, 0}, {4, 0}, {1, 0}, {8, 0}, {6, 0}},
{{1, 1}, {1, 1}, {2, 0}, {3, 0}, {5, 0}, {1, 1}},
{{1, 1}, {1, 1}, {1, 1}, {1, 1}, {5, 0}, {1, 1}},
{{3, 1}, {5, 0}, {4, 0}, {1, 0}, {5, 0}, {6, 0}},
{{3, 1}, {3, 1}, {3, 1}, {3, 1}, {5, 0}, {3, 1}},
{{-1, -1}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}}, /* final state */
{{6, 1}, {6, 1}, {7, 0}, {6, 1}, {5, 0}, {3, 0}},
{{6, 1}, {6, 1}, {6, 1}, {6, 1}, {5, 0}, {6, 1}},
{{-1, -1}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}}, /* final state */
/* Ctype: ALPHA BLANK ESCAPE DQUOTE EOS SQUOTE
/* State 0: Start */ {{3, 1}, {0, 0}, {4, 0}, {1, 0}, {8, 0}, {6, 0}},
/* State 1: In dquote */ {{1, 1}, {1, 1}, {2, 0}, {3, 0}, {5, 0}, {1, 1}},
/* State 2: Escape in dquote */ {{1, 1}, {1, 1}, {1, 1}, {1, 1}, {5, 0}, {1, 1}},
/* State 3: In token */ {{3, 1}, {5, 0}, {4, 0}, {1, 0}, {5, 0}, {6, 0}},
/* State 4: Escaping */ {{3, 1}, {3, 1}, {3, 1}, {3, 1}, {5, 0}, {3, 1}},
/* State 5: End of string */ {{-1, -1}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}}, /* final state */
/* State 6: In squote */ {{6, 1}, {6, 1}, {7, 0}, {6, 1}, {5, 0}, {3, 0}},
/* State 7: Escape in squote */ {{6, 1}, {6, 1}, {6, 1}, {6, 1}, {5, 0}, {6, 1}},
/* State 8: End of string */ {{-1, -1}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}}, /* final state */
};
char *wtokennext(char *word, char **next)