adds line comments for CONTROL

Adds line comments denoted by # within CONTROL files.
For the moment a comment must be start with # and is valid
until the end of the line. It's not possible to add a comment
at the end of usable lines.

Signed-off-by: Tobias Kohlbau <tobias@kohlbau.de>

1 files changed, 22 insertions, 1 deletions

diff --git a/toolsrc/src/Paragraphs.cpp b/toolsrc/src/Paragraphs.cpp
index aebe3d1f8..898fc6460 100644
--- a/toolsrc/src/Paragraphs.cpp
+++ b/toolsrc/src/Paragraphs.cpp
@@ -32,6 +32,16 @@ namespace vcpkg::Paragraphs
             }
         }
 
+        void skip_comment(char& ch)
+        {
+            while (ch != '\r')
+                next(ch);
+            if (ch == '\r')
+                next(ch);
+            if (ch == '\n')
+                next(ch);
+        }
+
         void skip_spaces(char& ch)
         {
             while (ch == ' ' || ch == '\t')
@@ -45,6 +55,11 @@ namespace vcpkg::Paragraphs
                    || (ch >= '0' && ch <= '9');
         }
 
+        static bool is_comment(char ch)
+        {
+            return (ch == '#');
+        }
+
         static bool is_lineend(char ch)
         {
             return ch == '\r' || ch == '\n' || ch == 0;
@@ -68,7 +83,7 @@ namespace vcpkg::Paragraphs
                 if (ch == '\n')
                     next(ch);
 
-                if (is_alphanum(ch))
+                if (is_alphanum(ch) || is_comment(ch))
                 {
                     // Line begins a new field.
                     return;
@@ -115,6 +130,12 @@ namespace vcpkg::Paragraphs
             std::string fieldvalue;
             do
             {
+                if (is_comment(ch))
+                {
+                    skip_comment(ch);
+                    continue;
+                }
+
                 get_fieldname(ch, fieldname);
 
                 auto it = fields.find(fieldname);