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33 .\" @(#)strfile.8 8.1 (Berkeley) 6/9/93
41 .Nd "create a random access file for storing strings"
52 reads a file containing groups of lines separated by a line containing
55 sign and creates a data file which contains
56 a header structure and a table of file offsets for each group of lines.
57 This allows random access of the strings.
59 The output file, if not specified on the command line, is named
60 .Ar source_file Ns Sy .out .
62 The options are as follows:
63 .Bl -tag -width "-c char"
65 Change the delimiting character from the percent sign to
68 Ignore case when ordering the strings.
70 Order the strings in alphabetical order.
71 The offset table will be sorted in the alphabetical order of the
72 groups of lines referenced.
73 Any initial non-alphanumeric characters are ignored.
74 This option causes the
80 Randomize access to the strings.
81 Entries in the offset table will be randomly ordered.
82 This option causes the
88 Run silently; don't give a summary message when finished.
90 Note that each alphabetic character in the groups of lines is rotated
91 13 positions in a simple caesar cipher.
92 This option causes the
99 The format of the header is:
100 .Bd -literal -offset indent
102 unsigned long str_version; /* version number */
103 unsigned long str_numstr; /* # of strings in the file */
104 unsigned long str_longlen; /* length of longest string */
105 unsigned long str_shortlen; /* length of shortest string */
106 #define STR_RANDOM 0x1 /* randomized pointers */
107 #define STR_ORDERED 0x2 /* ordered pointers */
108 #define STR_ROTATED 0x4 /* rot-13'd text */
109 unsigned long str_flags; /* bit field for flags */
110 char str_delim; /* delimiting character */
113 All fields are written in big-endian byte order.
117 is to undo the work of
119 It prints out the strings contained in the file
121 in the order that they are listed in the header file
122 .Ar source_file Ns Sy .dat
124 It is possible to create sorted versions of input files by using
128 is run and then using
130 to dump them out in the table order.
132 .Bl -tag -width strfile.out -compact
142 utility first appeared in