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changeset 1722:7d2ab44f7a59 default tip

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remove String regex fns
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 29 Jul 2022 14:12:01 -0600
parents 5c69d2e8bd75
children
files src/luan/modules/String.luan src/luan/modules/StringLuan.java website/src/manual.html.luan
diffstat 3 files changed, 0 insertions(+), 258 deletions(-) [+]
line wrap: on
line diff
--- a/src/luan/modules/String.luan	Tue Jul 26 12:44:52 2022 -0600
+++ b/src/luan/modules/String.luan	Fri Jul 29 14:12:01 2022 -0600
@@ -12,14 +12,9 @@
 String.ends_with = StringLuan.ends_with
 String.find = StringLuan.find
 String.format = StringLuan.format
-String.gmatch = StringLuan.gmatch
-String.gsub = StringLuan.gsub
 String.lower = StringLuan.lower
-String.match = StringLuan.match
-String.matches = StringLuan.matches
 String.regex = Boot.regex
 String.regex_quote = Pattern.quote
-String.rep = StringLuan.repeated  -- remove
 String.repeated = StringLuan.repeated
 String.replace = StringLuan.replace
 String.reverse = StringLuan.reverse
--- a/src/luan/modules/StringLuan.java	Tue Jul 26 12:44:52 2022 -0600
+++ b/src/luan/modules/StringLuan.java	Fri Jul 29 14:12:01 2022 -0600
@@ -2,8 +2,6 @@
 
 import java.security.NoSuchAlgorithmException;
 import java.util.Arrays;
-import java.util.regex.Pattern;
-import java.util.regex.Matcher;
 import goodjava.util.GoodUtils;
 import luan.Luan;
 import luan.LuanTable;
@@ -99,100 +97,6 @@
 		return i == -1 ? null : new Integer[]{i+1,i+s2.length()};
 	}
 
-	public static String[] match(String s,String pattern,Integer init) {
-		int start = start(s,init,0);
-		Matcher m = Pattern.compile(pattern).matcher(s);
-		if( !m.find(start) )
-			return null;
-		int n = m.groupCount();
-		if( n == 0 )
-			return new String[]{m.group()};
-		String[] rtn = new String[n];
-		for( int i=0; i<n; i++ ) {
-			rtn[i] = m.group(i+1);
-		}
-		return rtn;
-	}
-
-	public static LuanFunction gmatch(String s,String pattern) throws LuanException {
-		Utils.checkNotNull(s);
-		Utils.checkNotNull(pattern,2);
-		final Matcher m = Pattern.compile(pattern).matcher(s);
-		return new LuanFunction() {
-			@Override public Object call(Luan luan,Object[] args) {
-				if( !m.find() )
-					return null;
-				final int n = m.groupCount();
-				if( n == 0 )
-					return m.group();
-				String[] rtn = new String[n];
-				for( int i=0; i<n; i++ ) {
-					rtn[i] = m.group(i+1);
-				}
-				return rtn;
-			}
-		};
-	}
-
-	public static Object[] gsub(Luan luan,String s,String pattern,Object repl,Integer n) throws LuanException {
-		Utils.checkNotNull(s);
-		int max = n==null ? Integer.MAX_VALUE : n;
-		final Matcher m = Pattern.compile(pattern).matcher(s);
-		if( repl instanceof String ) {
-			String replacement = (String)repl;
-			int i = 0;
-			StringBuffer sb = new StringBuffer();
-			while( i<max && m.find() ) {
-				m.appendReplacement(sb,replacement);
-				i++;
-			}
-			m.appendTail(sb);
-			return new Object[]{ sb.toString(), i };
-		}
-		if( repl instanceof LuanTable ) {
-			LuanTable t = (LuanTable)repl;
-			int i = 0;
-			StringBuffer sb = new StringBuffer();
-			while( i<max && m.find() ) {
-				String match = m.groupCount()==0 ? m.group() : m.group(1);
-				Object val = t.get(luan,match);
-				if( val != null ) {
-					String replacement = luan.luanToString(val);
-					m.appendReplacement(sb,replacement);
-				}
-				i++;
-			}
-			m.appendTail(sb);
-			return new Object[]{ sb.toString(), i };
-		}
-		if( repl instanceof LuanFunction ) {
-			LuanFunction fn = (LuanFunction)repl;
-			int i = 0;
-			StringBuffer sb = new StringBuffer();
-			while( i<max && m.find() ) {
-				Object[] args;
-				final int count = m.groupCount();
-				if( count == 0 ) {
-					args = new String[]{m.group()};
-				} else {
-					args = new String[count];
-					for( int j=0; j<count; j++ ) {
-						args[j] = m.group(j+1);
-					}
-				}
-				Object val = Luan.first( fn.call(luan,args) );
-				if( val != null ) {
-					String replacement = luan.luanToString(val);
-					m.appendReplacement(sb,replacement);
-				}
-				i++;
-			}
-			m.appendTail(sb);
-			return new Object[]{ sb.toString(), i };
-		}
-		throw new LuanException( "bad argument #3 to 'gsub' (string/function/table expected)" );
-	}
-
 	// note - String.format() is too stupid to convert between ints and floats.
 	public static String format(String format,Object... args) {
 		return String.format(format,args);
@@ -214,11 +118,6 @@
 		return null;
 	}
 
-	public static boolean matches(String s,String pattern) throws LuanException {
-		Utils.checkNotNull(s);
-		return Pattern.compile(pattern).matcher(s).find();
-	}
-
 	public static String[] split(String s,String s2,Integer limit) throws LuanException {
 		Utils.checkNotNull(s);
 		Utils.checkNotNull(s2,2);
--- a/website/src/manual.html.luan	Tue Jul 26 12:44:52 2022 -0600
+++ b/website/src/manual.html.luan	Fri Jul 29 14:12:01 2022 -0600
@@ -2485,125 +2485,6 @@
 <%
 						end
 					}
-					["String.gmatch"] = {
-						title = "<code>String.gmatch (s, pattern)</code>"
-						content = function()
-%>
-<p>
-Returns an iterator function that,
-each time it is called,
-returns the next captures from <code>pattern</code> (see <a href="http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html">Pattern</a>)
-over the string <code>s</code>.
-If <code>pattern</code> specifies no captures,
-then the whole match is produced in each call.
-</p>
-
-<p>
-As an example, the following loop
-will iterate over all the words from string <code>s</code>,
-printing one per line:
-</p>
-<pre>
-	local s = "hello world from Lua"
-	for w in String.gmatch(s, [[\w+]]) do
-		print(w)
-	end
-</pre>
-
-<p>
-The next example collects all pairs <code>key=value</code> from the
-given string into a table:
-</p>
-<pre>
-	local t = {}
-	local s = "from=world, to=Lua"
-	for k, v in String.gmatch(s, [[(\w+)=(\w+)]]) do
-		t[k] = v
-	end
-</pre>
-
-<p>
-For this function, a caret '<code>^</code>' at the start of a pattern does not
-work as an anchor, as this would prevent the iteration.
-</p>
-<%
-						end
-					}
-					["String.gsub"] = {
-						title = "<code>String.gsub (s, pattern, repl [, n])</code>"
-						content = function()
-%>
-<p>
-Returns a copy of <code>s</code>
-in which all (or the first <code>n</code>, if given)
-occurrences of the <code>pattern</code> (see <a href="http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html">Pattern</a>) have been
-replaced by a replacement string specified by <code>repl</code>,
-which can be a string, a table, or a function.
-<code>gsub</code> also returns, as its second value,
-the total number of matches that occurred.
-The name <code>gsub</code> comes from <em>Global SUBstitution</em>.
-</p>
-
-<p>
-If <code>repl</code> is a string, then its value is used for replacement.
-The character&nbsp;<code>\</code> works as an escape character.
-Any sequence in <code>repl</code> of the form <code>$<em>d</em></code>,
-with <em>d</em> between 1 and 9,
-stands for the value of the <em>d</em>-th captured substring.
-The sequence <code>$0</code> stands for the whole match.
-</p>
-
-<p>
-If <code>repl</code> is a table, then the table is queried for every match,
-using the first capture as the key.
-</p>
-
-<p>
-If <code>repl</code> is a function, then this function is called every time a
-match occurs, with all captured substrings passed as arguments,
-in order.
-</p>
-
-<p>
-In any case,
-if the pattern specifies no captures,
-then it behaves as if the whole pattern was inside a capture.
-</p>
-
-<p>
-If the value returned by the table query or by the function call
-is not <b>nil</b>,
-then it is used as the replacement string;
-otherwise, if it is <b>nil</b>,
-then there is no replacement
-(that is, the original match is kept in the string).
-</p>
-
-<p>
-Here are some examples:
-</p>
-<pre>
-     x = String.gsub("hello world", [[(\w+)]], "$1 $1")
-     --&gt; x="hello hello world world"
-     
-     x = String.gsub("hello world", [[\w+]], "$0 $0", 1)
-     --&gt; x="hello hello world"
-     
-     x = String.gsub("hello world from Luan", [[(\w+)\s*(\w+)]], "$2 $1")
-     --&gt; x="world hello Luan from"
-          
-     x = String.gsub("4+5 = $return 4+5$", [[\$(.*?)\$]], function (s)
-           return load(s)()
-         end)
-     --&gt; x="4+5 = 9"
-     
-     local t = {name="lua", version="5.3"}
-     x = String.gsub("$name-$version.tar.gz", [[\$(\w+)]], t)
-     --&gt; x="lua-5.3.tar.gz"
-</pre>
-<%
-						end
-					}
 					["String.lower"] = {
 						title = "<code>String.lower (s)</code>"
 						content = function()
@@ -2616,39 +2497,6 @@
 <%
 						end
 					}
-					["String.match"] = {
-						title = "<code>String.match (s, pattern [, init])</code>"
-						content = function()
-%>
-<p>
-Looks for the first <em>match</em> of
-<code>pattern</code> (see <a href="http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html">Pattern</a>) in the string <code>s</code>.
-If it finds one, then <code>match</code> returns
-the captures from the pattern;
-otherwise it returns <b>nil</b>.
-If <code>pattern</code> specifies no captures,
-then the whole match is returned.
-A third, optional numerical argument <code>init</code> specifies
-where to start the search;
-its default value is&nbsp;1 and can be negative.
-</p>
-<%
-						end
-					}
-					["String.matches"] = {
-						title = "<code>String.matches (s, pattern)</code>"
-						content = function()
-%>
-<p>
-Returns a boolean indicating whether the <code>pattern</code> can be found in string <code>s</code>.
-This function is equivalent to
-</p>
-<pre>
-     return String.match(s,pattern) ~= nil
-</pre>
-<%
-						end
-					}
 					["String.regex"] = {
 						title = "<code>String.regex (s)</code>"
 						content = function()