Make the property-list documentation useful for users.

This commit is contained in:
Bill Currie 2011-08-20 16:26:51 +09:00
parent 14c23879b1
commit a759a5a376
3 changed files with 101 additions and 40 deletions

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@ -4,8 +4,8 @@ SUBDIRS= man
DOX=\
bind.dox connect.dox cshifts.dox dirconf.dox faq.dox \
filesystem.dox mapformat.dox qtv.dox quakeforge.dox qw-cap-spec.dox \
qw-download-spec.dox surround-sound.dox timestamps.dox
filesystem.dox mapformat.dox property-lists.dox qtv.dox quakeforge.dox \
qw-cap-spec.dox qw-download-spec.dox surround-sound.dox timestamps.dox
EXTRA_DIST= qf.ico \
\

90
doc/property-lists.dox Normal file
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@ -0,0 +1,90 @@
//unfortunatly, have to wrap the docs in a C comment for doxygen
/**
\page property-lists Property Lists
\QF's property lists are based on those used in OpenStep.
\QF uses property lists for a wide variety of purposes. This includes saved
game data, directory configuration and play-lists.
Property lists are text files that describe a single value. However, that
value can be one of the following types:
<dl>
<dt>Dictionaries</dt> <dd>Lists of values that are each accociated
with a key</dd>
<dt>Arrays</dt> <dd>Lists of indexed values</dd>
<dt>Strings</dt> <dd>Simple text strings.</dd>
<dt>Binary data</dt> <dd>Random binary data</dd>
</dl>
Dictionary and Array values allow for arbitrarily complex data to be
represented by a property list.
In addition, property lists also support comments, both single-line and
multi-line. Single-line comments start with \c // and continue to the end
of the line. Multi-line comments begine with
<!-- crazy formatting to get C comments--><code>/</code><code>*</code> and
end with <code>*</code><code>/</code>, and may span multiple lines, or be
contained entirely within a single line, possibly with non-comment text
following the comment.
\section pl-dictionaries Dictionaries.
A dictionary is a list of values, each associated with a key. The order of
key/value pairs in a dictionary is not preserved.
\code
{
key1 = value1;
key2 = value2;
// ...
}
\endcode
A dictionary may be empty or have any number of
<code>key&nbsp;=&nbsp;value</code> pairs separated by \c ;. The final \c ;
before the closing \c } is optional.
The key must be a string, but the value may be of any type, including
dictionary or array.
\section Arrays
An array is an ordered list of values. The order of the values in an array
is preserved.
\code
(
value1,
value2,
// ...
)
\endcode
An array may be empty or have any number of values. Each value may be of
any type, including dictionary or array.
\section pl-strings Strings
\QF's property lists support three types of strings: unquoted, quoted and
"long".
An unquoted string may contain most printable characters. This includes the
digits \c 0 to \c 9, the letters \c a to \c z and \c A to \c Z, and the
symbols \c !, \c #, \c $, \c %, \c &, \c *, \c +, \c -, \c ., \c /, \c :,
\c ?, \c @, \c |, \c ~, \c _ and \c ^.
\verbatim
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz!#$%&*+-./:?@|~_^
\endverbatim
Quoted strings may contain whitespace, C escape sequences, and any
printable character. The quote character is \c \".
Long strings use tripple quotes (\c \"\"\") instead of \c \" as the quote
character. This allows the use of unquoted \c \" characters in the string.
And yes, these long strings were inspired by Python's long strings.
\section pl-binary Binary Data
<!-- in the following paragraph, the \< and \> are just < and >. the \ is
for doxygen -->
Binary data is hex-encoded and contained within angle brackets (\c \< \c
\>). There must be an even number of hex-digits. That is, while \c \<FF00\>
is value, \c \<F00\> is not.
*/

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@ -36,46 +36,17 @@
#include "QF/qtypes.h"
/**
There are four types of data that can be stored in a property list:
/** The type of the property list item.
<dl>
<dt>QFDictionary</dt> <dd>A list of values, each associated with a
key (a C string).</dd>
<dt>QFArray</dt> <dd>A list of indexed values</dd>
<dt>QFString</dt> <dd>A string.</dd>
<dt>QFBinary</dt> <dd>Random binary data.</dd>
</dl>
In textual form, a dictionary looks like:
\code
{
key = value;
}
\endcode
An array looks like:
\code
(
value1,
value2
)
\endcode
An unquoted string may contain only alphanumeric characters and/or the
underscore character, <code>_</code>. Quoted strings may contain
whitespace, C escape sequences, and so on. The quote character is
<code>\"</code>. Optionally, Python style long strings
(<code>\"\"\"...\"\"\"</code>) may be used, allowing for unquoted
<code>"</code> quotes in the string.
<!-- in the following paragraph, the \< and \> are just < and >. the \ is
for doxygen -->
QFBinary data is hex-encoded and contained within angle brackets, \c \<
\c \>. The length of the encoded data must be an even number, so while
\c \<FF00\> is valid, \c \<F00\> isn't.
Property lists may contain C-style or BCPL-style comments.
For further details, see \ref property-lists.
*/
typedef enum {QFDictionary, QFArray, QFBinary, QFString} pltype_t;
typedef enum {
QFDictionary, ///< The property list item represents a dictionary.
QFArray, ///< The property list item represents an array.
QFBinary, ///< The property list item represents arbitrary binary
///< data.
QFString ///< The property list item represents a C string.
} pltype_t;
/** Generic property list item.