make_guides.py: controllo dei timestamp prima di buildare.

1 files changed, 45 insertions, 5 deletions

diff --git a/make_guides.py b/make_guides.py
index 40c2c3b..42ce90b 100755
--- a/make_guides.py
+++ b/make_guides.py
@@ -15,8 +15,33 @@ def basename(fname):
 
 def build_latex(guide):
     '''Builds the LaTeX source for the guide'''
+    src_dir = os.path.join('guides',guide)
+    tools_dir = 'tools'
     build_dir = os.path.join('build',guide)
     tex_name = guide+'.tex'
+    # Check if we need to (re)build
+    rebuild = False
+    try:
+        tex_time = os.stat(os.path.join(build_dir,tex_name)).st_mtime
+        # the source has changed?
+        for dirpath, dirnames, filenames in os.walk(src_dir):
+            for src_file in filenames:
+                src_time = os.stat(os.path.join(dirpath,src_file)).st_mtime
+                if src_time > tex_time:
+                    rebuild = True
+                    break
+        # a template has changed?
+        for dirpath, dirnames, filenames in os.walk(tools_dir):
+            for src_file in filenames:
+                src_time = os.stat(os.path.join(dirpath,src_file)).st_mtime
+                if src_time > tex_time:
+                    rebuild = True
+                    break
+    except (IOError,OSError):
+        rebuild = True
+    if not rebuild:
+        return None
+    # Build the LaTeX source
     # DEBUG
     print('Building LaTeX...')
     if not os.path.isdir(build_dir):
@@ -31,8 +56,15 @@ def build_pdf(guide):
     tex_name = guide+'.tex'
     pdf_name = guide+'.pdf'
     # check for prerequisites
-    if not os.path.isfile(os.path.join(build_dir,tex_name)):
-        build_latex(guide)
+    build_latex(guide)
+    # Check if we need to (re)build
+    tex_time = os.stat(os.path.join(build_dir,tex_name)).st_mtime
+    try:
+        pdf_time = os.stat(os.path.join(dist_dir,pdf_name)).st_mtime
+        if pdf_time > tex_time:
+            return None
+    except OSError:
+        pass
     # DEBUG
     print('Building PDF...')
     if not os.path.isdir(dist_dir):
@@ -46,8 +78,15 @@ def build_nup_pdf(guide):
     pdf_name = guide+'.pdf'
     nup_name = guide+'-A6suA4.pdf'
     # check for prerequisites
-    if not os.path.isfile(os.path.join(dist_dir,pdf_name)):
-        build_pdf(guide)
+    build_pdf(guide)
+    # Check if we need to (re)build
+    pdf_time = os.stat(os.path.join(dist_dir,pdf_name)).st_mtime
+    try:
+        nup_time = os.stat(os.path.join(dist_dir,nup_name)).st_mtime
+        if nup_time > pdf_time:
+            return None
+    except OSError:
+        pass
     # DEBUG
     print('Building nup PDF...')
     if not os.path.isdir(dist_dir):
@@ -56,7 +95,8 @@ def build_nup_pdf(guide):
     fp.close()
 
 def main():
-    parser = argparse.ArgumentParser(description='Build a distribution format of a 1800 words article')
+    parser = argparse.ArgumentParser(description='Build a distribution format of a 1800 words article',
+            epilog='Prerequisites of required formats are build automatically, but you may want to build the LaTeX source first, edit it by hand and then build the rest.')
     parser.add_argument('guide', nargs='+', type=basename,
             help='Source directory of the article')
     parser.add_argument('-l','--latex',action='store_true',