Added single_header_packer.py

scripts/single_header_packer.py

@@ -0,0 +1,138 @@
+
+import fnmatch
+import os.path
+import sys
+
+def print_help():
+    print(
+"""usage: python single_header_packer.py --macro <macro> [--intro <files>] --pub <files> --priv <files> [--outro <files>]
+
+       where <files> can be a comma-separated list of files. e.g. --priv *.c,inc/*.h
+
+       The resulting code is packed as follows:
+
+           /*
+           [intro file contents]
+           */
+
+           #ifndef <macro>_SINGLE_HEADER
+           #define <macro>_SINGLE_HEADER
+           [public header file contents]
+           #endif /* <macro>_SINGLE_HEADER */
+
+           #ifdef <macro>_IMPLEMENTATION
+           [private header and source file contents]
+           #endif /* <macro>_IMPLEMENTATION */
+
+           /*
+           [outro file contents]
+           */""")
+
+def parse_files(arg):
+    files = []
+    paths = arg.split(",")
+    for path in paths:
+        if "*" in path:
+            # Wildcard
+            d = os.path.dirname(path)
+            if d == "": d = "."
+            if not os.path.exists(d):
+                print(d + " does not exist.")
+                exit()
+
+            wildcard = os.path.basename(path)
+            unsorted = []
+            for file in os.listdir(d):
+                if fnmatch.fnmatch(file, wildcard):
+                    unsorted.append(os.path.join(d, file))
+            unsorted.sort()
+            files.extend(unsorted)
+
+        else:
+            # Regular file
+            if not os.path.exists(path):
+                print(path + " does not exist.")
+                exit()
+            elif os.path.isdir(path):
+                print(path + " is a directory. Expected a file name.")
+                exit()
+            else:
+                files.append(path)
+
+    return files;
+
+def omit_includes(str, files):
+    for file in files:
+        fname = os.path.basename(file)
+        if ".h" in file:
+            str = str.replace("#include \"" + fname + "\"", "");
+            str = str.replace("#include <" + fname + ">", "");
+    return str
+
+# Main start
+# ==========
+
+if len(sys.argv) < 2:
+    print_help()
+    exit()
+
+intro_files = []
+pub_files = []
+priv_files = []
+outro_files = []
+cur_arg = 1
+macro = ""
+
+# Parse args
+# ----------
+while cur_arg < len(sys.argv):
+    if sys.argv[cur_arg] == "--help":
+        print_help()
+        exit()
+    elif sys.argv[cur_arg] == "--macro":
+        cur_arg += 1
+        macro = sys.argv[cur_arg]
+    elif sys.argv[cur_arg] == "--intro":
+        cur_arg += 1
+        intro_files = parse_files(sys.argv[cur_arg])
+    elif sys.argv[cur_arg] == "--pub":
+        cur_arg += 1
+        pub_files = parse_files(sys.argv[cur_arg])
+    elif sys.argv[cur_arg] == "--priv":
+        cur_arg += 1
+        priv_files = parse_files(sys.argv[cur_arg])
+    elif sys.argv[cur_arg] == "--outro":
+        cur_arg += 1
+        outro_files = parse_files(sys.argv[cur_arg])
+    else:
+        print("Unknown argument " + sys.argv[cur_arg])
+
+    cur_arg += 1
+
+if macro == "":
+    print("Option --macro <macro> is mandatory")
+    exit()
+
+# Print concatenated output
+# -------------------------
+print(os.linesep * 2 + "/*")
+for f in intro_files:
+    sys.stdout.write(open(f, 'r').read())
+print("*/")
+
+print(os.linesep + "#ifndef " + macro + "_SINGLE_HEADER");
+print("#define " + macro + "_SINGLE_HEADER");
+for f in pub_files:
+    sys.stdout.write(open(f, 'r').read())
+print("#endif /* " + macro + "_SINGLE_HEADER */");
+
+print(os.linesep + "#ifdef " + macro + "_IMPLEMENTATION");
+for f in priv_files:
+    print(omit_includes(open(f, 'r').read(),
+                        pub_files + priv_files))
+print("#endif /* " + macro + "_IMPLEMENTATION */");
+
+print(os.linesep + "/*")
+for f in outro_files:
+    sys.stdout.write(open(f, 'r').read())
+print("*/" + os.linesep)