1ao_string_tokenize(3)         Programmer's Manual        ao_string_tokenize(3)
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NAME

6       ao_string_tokenize - tokenize an input string
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SYNOPSIS

10       #include <your-opts.h>
11       cc [...] -o outfile infile.c -lopts [...]
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13       token_list_t* ao_string_tokenize(char const* string);
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DESCRIPTION

17       This  function  will  convert  one input string into a list of strings.
18       The list of strings is derived by separating the input based  on  white
19       space separation.  However, if the input contains either single or dou‐
20       ble quote characters, then the text after that character up to a match‐
21       ing quote will become the string in the list.
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23       The  returned pointer should be deallocated with free(3C) when are done
24       using the data.  The data are placed in a  single  block  of  allocated
25       memory.  Do not deallocate individual token/strings.
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27       The structure pointed to will contain at least these two fields:
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29       tkn_ct The number of tokens found in the input string.
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31       tok_list  An array of tkn_ct + 1 pointers to substring tokens, with the
32       last pointer set to NULL.
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34       There are two types of quoted strings: single  quoted  (')  and  double
35       quoted  (").  Singly quoted strings are fairly raw in that escape char‐
36       acters (\) are simply another character, except when preceding the fol‐
37       lowing characters:
38           \  double backslashes reduce to one
39           '   incorporates the single quote into the string
40           0fP  suppresses both the backslash and newline character
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42       Double  quote  strings are formed according to the rules of string con‐
43       stants in ANSI-C programs.
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45       string string to be tokenized
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RETURN VALUE

49       pointer to a structure that lists each token
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ERRORS

53       NULL is returned and errno will be set to indicate the problem:
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61       EINVAL - There was an unterminated quoted string.
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63       ENOENT - The input string was empty.
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65       ENOMEM - There is not enough memory.  @end itemize
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EXAMPLES

69                #include <stdlib.h>
70                int ix;
71                token_list_t* ptl = ao_string_tokenize( some_string )
72                for (ix = 0; ix < ptl->tkn_ct; ix++)
73                do_something_with_tkn( ptl->tkn_list[ix] );
74                free( ptl );
75            Note that everything is freed with the one call to free(3C).
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SEE ALSO

78       The info documentation for the -lopts library.
79       configFileLoad(3), optionFileLoad(3),  optionFindNextValue(3),  option‐
80       FindValue(3),   optionFree(3),   optionGetValue(3),  optionLoadLine(3),
81       optionNextValue(3),  optionOnlyUsage(3),  optionProcess(3),   optionRe‐
82       store(3), optionSaveFile(3), optionSaveState(3), optionUnloadNested(3),
83       optionVersion(3),  pathfind(3),   strequate(3),   streqvcmp(3),   stre‐
84       qvmap(3), strneqvcmp(3), strtransform(3),
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88                                  2009-08-10             ao_string_tokenize(3)
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