Initial project version

tudplot/tex2grace.py

@@ -0,0 +1,53 @@
+
+from collections import OrderedDict
+import logging
+import re
+
+patterns = OrderedDict()
+patterns['\$'] = ''
+patterns['¹'] = r'\\S1\\N'
+patterns['²'] = r'\\S2\\N'
+patterns['³'] = r'\\S3\\N'
+patterns['⁴'] = r'\\S4\\N'
+patterns['⁵'] = r'\\S5\\N'
+patterns['⁶'] = r'\\S6\\N'
+patterns['⁷'] = r'\\S7\\N'
+patterns['⁸'] = r'\\S8\\N'
+patterns['⁹'] = r'\\S9\\N'
+patterns['⁻'] = r'\\S-\\N'
+patterns[r'\\star'] = '*'
+patterns[r'\\,'] = r'\\-\\- \\+\\+'
+patterns[r'\\[;:.]'] = ''
+patterns[r'\\math(?:tt|sf|it|rm)({[^}]+})'] = r'\1'
+patterns[r'\^({[^}]+}|.)'] = r'\\S\1\\N'
+patterns[r'\_({[^}]+}|.)'] = r'\\s\1\\N'
+# Remove any left over latex groups as the last step
+patterns[r'[{}]'] = ''
+
+# now any patterns that do need braces...
+patterns[r'\\tilde '] = r'\\v{{0.1}}~\\v{{-0.1}}\\M{{1}}'
+
+# Greek letters in xmgrace are written by switching to symbol-font:
+# "\x a\f{}" will print an alpha and switch back to normal font
+greek = {
+    'alpha': 'a', 'beta': 'b', 'gamma': 'g', 'delta': 'd', 'epsilon': 'e', 'zeta': 'z',
+    'eta': 'h', 'theta': 'q', 'iota': 'i', 'kappa': 'k', 'lambda': 'l', 'mu': 'm',
+    'nu': 'n', 'xi': 'x', 'omicron': 'o', 'pi': 'p', 'rho': 'r', 'sigma': 's',
+    'tau': 't', 'upsilon': 'u', 'phi': 'f', 'chi': 'c', 'psi': 'y', 'omega': 'w',
+    'varphi': 'j', 'varepsilon': 'e', 'vartheta': 'J', 'varrho': 'r',
+    'Phi': 'F',
+    'langle': r'\#{{e1}}', 'rangle': r'\#{{f1}}', 'infty': r'\\c%\\C', 'cdot': r'\#{{d7}}',
+    'sqrt': r'\#{{d6}}', 'propto': r'\#{{b5}}', 'approx': r'\#{{bb}}'
+}
+for latex, xmg in greek.items():
+    patt = r'\\{}'.format(latex)
+    repl = r'\\x {}\\f{{{{}}}}'.format(xmg)
+    patterns[patt] = repl
+
+
+def latex_to_xmgrace(string):
+    logging.debug('Convert to xmgrace: {}'.format(string))
+    for patt, repl in patterns.items():
+        string = re.sub(patt, repl, string)
+    logging.debug('To -> {}'.format(string))
+    return string