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Add support for named and/or subexpressions with indexes > 99 in conditional format expressions.

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[SVN r52873]
This commit is contained in:
John Maddock
2009-05-10 09:14:46 +00:00
parent f310162a85
commit 9d18ba1151
34 changed files with 409 additions and 194 deletions
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166
doc/html/boost_regex/format/boost_format_syntax.html
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@ -32,7 +32,7 @@
'$', '\', '(', ')', '?', and ':'.
</p>
<a name="boost_regex.format.boost_format_syntax.grouping"></a><h5>
<a name="id800525"></a>
<a name="id779996"></a>
<a class="link" href="boost_format_syntax.html#boost_regex.format.boost_format_syntax.grouping">Grouping</a>
</h5>
<p>
@ -40,7 +40,7 @@
you want a to output literal parenthesis.
</p>
<a name="boost_regex.format.boost_format_syntax.conditionals"></a><h5>
<a name="id800542"></a>
<a name="id780012"></a>
<a class="link" href="boost_format_syntax.html#boost_regex.format.boost_format_syntax.conditionals">Conditionals</a>
</h5>
<p>
@ -65,8 +65,21 @@
match found with "foo" if the sub-expression $1 was matched, and
with "bar" otherwise.
</p>
<p>
For sub-expressions with an index greater than 9, or for access to named
sub-expressions use:
</p>
<p>
?{INDEX}true-expression:false-expression
</p>
<p>
or
</p>
<p>
?{NAME}true-expression:false-expression
</p>
<a name="boost_regex.format.boost_format_syntax.placeholder_sequences"></a><h5>
<a name="id800579"></a>
<a name="id780065"></a>
<a class="link" href="boost_format_syntax.html#boost_regex.format.boost_format_syntax.placeholder_sequences">Placeholder
Sequences</a>
</h5>
@ -105,6 +118,30 @@
</td>
</tr>
<tr>
<td>
<p>
$MATCH
</p>
</td>
<td>
<p>
As $&amp;
</p>
</td>
</tr>
<tr>
<td>
<p>
${^MATCH}
</p>
</td>
<td>
<p>
As $&amp;
</p>
</td>
</tr>
<tr>
<td>
<p>
$`
@ -119,6 +156,30 @@
</td>
</tr>
<tr>
<td>
<p>
$PREMATCH
</p>
</td>
<td>
<p>
As $`
</p>
</td>
</tr>
<tr>
<td>
<p>
${^PREMATCH}
</p>
</td>
<td>
<p>
As $`
</p>
</td>
</tr>
<tr>
<td>
<p>
$'
@ -131,6 +192,79 @@
</td>
</tr>
<tr>
<td>
<p>
$POSTMATCH
</p>
</td>
<td>
<p>
As $'
</p>
</td>
</tr>
<tr>
<td>
<p>
${^POSTMATCH}
</p>
</td>
<td>
<p>
As $'
</p>
</td>
</tr>
<tr>
<td>
<p>
$+
</p>
</td>
<td>
<p>
Outputs what matched the last marked sub-expression in the regular
expression.
</p>
</td>
</tr>
<tr>
<td>
<p>
$LAST_PAREN_MATCH
</p>
</td>
<td>
<p>
As $+
</p>
</td>
</tr>
<tr>
<td>
<p>
$LAST_SUBMATCH_RESULT
</p>
</td>
<td>
<p>
Outputs what matched the last sub-expression to be actually matched.
</p>
</td>
</tr>
<tr>
<td>
<p>
$^N
</p>
</td>
<td>
<p>
As $LAST_SUBMATCH_RESULT
</p>
</td>
</tr>
<tr>
<td>
<p>
$$
@ -154,6 +288,30 @@
</p>
</td>
</tr>
<tr>
<td>
<p>
${n}
</p>
</td>
<td>
<p>
Outputs what matched the n'th sub-expression.
</p>
</td>
</tr>
<tr>
<td>
<p>
$+{NAME}
</p>
</td>
<td>
<p>
Outputs whatever matched the sub-expression named "NAME".
</p>
</td>
</tr>
</tbody>
</table></div>
<p>
@ -161,7 +319,7 @@
as a literal.
</p>
<a name="boost_regex.format.boost_format_syntax.escape_sequences"></a><h5>
<a name="id800719"></a>
<a name="id780408"></a>
<a class="link" href="boost_format_syntax.html#boost_regex.format.boost_format_syntax.escape_sequences">Escape
Sequences</a>
</h5>