add remove blanks in output

Makefile

@@ -1,6 +1,7 @@
 # ABOUT
 # - In this Makefile, 'building a file' means:
 # 	- if the file has a '.html' extension: run the html preprocessor on the file and place the output in the output directory
+# 	- elif the file has a '.sass' or '.scss' extension: run the sass compiler on the file and place the output in the output directory
 # 	- else: copy the file to the output directory
 # - Folder structure from source directories will be preserved in the output directory
 # - Abbreviations:
@@ -11,8 +12,6 @@
 #   - PP: preprocessor
 #   - DEP: dependency
 
-# TODO: fix that you have invoke make twice to build both languages
-
 #
 # NORMAL SETTINGS
 # change these to fir your project

README.md

@@ -97,6 +97,19 @@ Same as `set`, but it returns the value of the variable that is being set. This
 ### default
 Same as `set`, but it sets the variable's value only if it has no value yet.
 
+### unset 
+Unset a variable
+
+**Synopsis**:
+Unset `varname`, it will no longer be defined and can therefor be set with `default` again.
+`<!-- #unset varname -->`
+
+**Argument**:
+Name of the variable
+
+**Return Value**:
+Empty string
+
 ---
 
 ### comment
@@ -171,7 +184,7 @@ Ignored
 The generated sidenav
 
 #### `section`
-Group all following entries in named section.
+Group all following entries in named section. `section` may not appear in conditional blocks and multiline comments.
 
 **Argument**:
 The name of the section

html-preprocessor

@@ -227,9 +227,6 @@ def cmd_include(args: str, variables:dict[str, str]={}) -> str:
             while p.i < len(p):  # at start of new line or end of comment
                 p.next_line()
                 ptrace(f"cmd_include: Processing at i={p.i} in line {pos2line(p.file, p.i)}")
-                # print(filename, p.i, pos2line(p.file, p.i))
-                # TODO: hangs here
-
                 if not p.find_comment_begin(): continue
                 if not p.find_comment_end(): continue
 
@@ -240,20 +237,17 @@ def cmd_include(args: str, variables:dict[str, str]={}) -> str:
                     pdebug(f"cmd_include Found command '{command}' with args '{cmd_args}'")
                     if command == "section":
                         if cmd_args.startswith(target_section):
-                            print(p.pos)
                             p.pos["start"] = max(p.pos["cmt_end"] + len(COMMENT_END), p.pos["line_end"] + 1)
-                            print(f">{content[p.pos['start']:p.pos['start']+1]}<")
                         elif p.pos["start"] >= 0:  #end
                             p.pos["end"] = max(p.pos["cmt_end"] + len(COMMENT_END), p.pos["line_end"] + 1)
                             # p.pos["end"] = p.pos["cmt_beg"]
                         p.replace_command_with_output("")
-                    p.command_end()
+                p.command_end()
                 if p.pos["start"] >= 0 and p.pos["end"] > 0: break
             if p.pos["start"] >= 0:
                 if p.pos["end"] < 0:
                     p.pos["end"] = len(p)
                 content = p[p.pos["start"]:p.pos["end"]]
-                print(content)
             else:
                 error(f"cmd_include: Could not find section {target_section} in file {filename}")
     except FileNotFoundError:
@@ -279,7 +273,7 @@ def cmd_return(args: str, variables:dict[str, str]={}) -> str:
     # pdebug(f"cmd_set: varname='{args[:space]}, 'arg='{args[space+1:]}', variables='{variables}'")
     if not (space > 0 and space < len(args)-1):
         variables[args] = ""
-        pdebug(f"cmd_set: Setting to emptry string: {args}")
+        pdebug(f"cmd_set: Setting to empty string: {args}")
     else:
         varname = args[:space]
         variables[varname] = ""
@@ -314,6 +308,14 @@ def cmd_set(args: str, variables:dict[str, str]={}) -> str:
     cmd_return(args, variables)
     return ""
 
+def cmd_unset(args: str, variables:dict[str, str]={}) -> str:
+    variable = args.strip(' ')
+    if variable not in variables:
+        pdebug(f"unset: variable '{variable}' is not set", level=error_levels["light"])
+    else:
+        variables.pop(variable)
+    return ""
+
 def cmd_default(args: str, variables:dict[str, str]={}) -> str:
     separator = args.find(' ')
     if args[:separator] not in variables:
@@ -337,8 +339,9 @@ def cmd_warning(args: str, variables:dict[str, str]={}) -> str:
 command2function:dict[str, Callable[[str, dict[str,str]], str]] = {
     "include":      cmd_include,
     "section":      cmd_section,
-    "set":          cmd_set,
     "return":       cmd_return,
+    "set":          cmd_set,
+    "unset":        cmd_unset,
     "default":      cmd_default,
     "comment":      cmd_comment,
     "uncomment":    cmd_uncomment,
@@ -483,18 +486,21 @@ class HTMLParser(Parser):
     def command_end(self):
         if self.pos["cmd_end"] == self.pos["cmt_end"]:  # reached end of comment
             if self.state["cmd_in_cmt"] or self.remove_comments:
-                # remove comment tags if a command was found
                 remove_newline = 0
                 if self[self.pos["cmt_beg"]-1] == '\n' and self[self.pos["cmt_end"]+len(COMMENT_END)] == '\n':  # if the comment consumes the whole line, remove the entire line
                     remove_newline = 1
-                # remove comment if done
-                ptrace(f"Deleting opening comment tags")
-                self.remove(self.pos["cmt_beg"], self.pos["cmt_beg"] + len(COMMENT_BEGIN))
-                self.remove(self.pos["cmt_end"], self.pos["cmt_end"] + len(COMMENT_END) + remove_newline, ignore_bounds=["cmt_end", "cmd_end", "line_end"])
-                # process the line again, because a command might have inserted new comments
-                self.i -= len(COMMENT_BEGIN)
+                if self.state["cmd_in_cmt"]:  # remove comment tags if a command was found
+                    ptrace(f"Deleting opening comment tags")
+                    self.remove(self.pos["cmt_beg"], self.pos["cmt_beg"] + len(COMMENT_BEGIN))
+                    self.remove(self.pos["cmt_end"], self.pos["cmt_end"] + len(COMMENT_END) + remove_newline, ignore_bounds=["cmt_end", "cmd_end", "line_end"])
+                    # process the line again, because a command might have inserted new comments
+                    self.i -= len(COMMENT_BEGIN)
+                elif self.remove_comments:  # remove entire comment
+                    self.remove(self.pos["cmt_beg"], self.pos["cmt_end"] + len(COMMENT_END) + remove_newline, ignore_bounds=["cmt_end", "cmd_beg", "cmd_end", "line_end"])
+                    self.i = self.pos["cmt_beg"]
             self.state["cmd_in_cmt"] = False
             self.pos["cmt_beg"] = -1
+            self.pos["cmd_beg"] = -1
             self.pos["cmt_end"] = -1
             self.pos["cmd_end"] = -1
         else:  # multiline comment
@@ -654,6 +660,8 @@ if __name__ == "__main__":
         target_html = file.read()
 
     output_html = parse_file(target_html, variables, not args.preserve_comments)
+    # remove empty lines
+    output_html = re.sub(r"[\t\r ]*\n(?:[\t\r ]*\n[\t\r ]*)+", r"\n", output_html)
 
     # pdebug(f"Output: {output_html}")