Sublime and Python: How to use Python Plugin to create neat equations from Scientific Workplace in Latex
I am using a program that helps in writing latex. However, there is a problem that everytime I write an argument it display it as eqnarray*
For example
\begin{eqnarray*}
r_{t}^{p} &=&\frac{P_{t}-P_{t-1}}{P_{t-1}} \\
&=&\frac{\left( \left( 1-\alpha \right) r_{t}^{\ast }-\alpha \right)
P_{t-1}+\alpha A_{t}}{P_{t-1}} \\
&=&\left( 1-\alpha \right) r_{t}^{\ast }-\alpha +\alpha \frac{A_{t}}{P_{t-1}}
\\
&=&\left( 1-\alpha \right) r_{t}^{\ast }+\alpha \left( \frac{A_{t}}{P_{t-1}}%
-1\right)
\end{eqnarray*}
I want it to look more organized as so
\begin{equation*}
\begin{split}
r_{t}^{p} &=\frac{P_{t}-P_{t-1}}{P_{t-1}} \\
&=\frac{((1-\alpha) r_{t}^{\ast}-\alpha) P_{t-1}+\alpha A_{t}}{P_{t-1}} \\
&=(1-\alpha) r_{t}^{\ast}-\alpha +\alpha \frac{A_{t}}{P_{t-1}} \\
&=(1-\alpha) r_{t}^{\ast}+\alpha (\frac{A_{t}}{P_{t-1}} -1)
\end{split}
\end{equation*}
I am using Sublime text 3 editor, therefore, I find myself doing the same thing again and again which is the following steps
- replace all the \ with /
make it one line
s= '/begin{eqnarray*} r_{t}^{p} &=&/frac{P_{t}-P_{t-1}}{P_{t-1}} // &=&/frac{/left( /left( 1-/alpha /right) r_{t}^{/ast }-/alpha /right) P_{t-1}+/alpha A_{t}}{P_{t-1}} // &=&/left( 1-/alpha /right) r_{t}^{/ast }-/alpha +/alpha /frac{A_{t}}{P_{t-1}} // &=&/left( 1-/alpha /right) r_{t}^{/ast }+/alpha /left( /frac{A_{t}}{P_{t-1}}% -1/right) /end{eqnarray*}'
remove %
s=s.replace("%", "") s
replace eqnarray* by equation*
s1=s.replace("eqnarray*", "equation*")
if the text include // then include a \begin{split} directly after \begin{equation*} and \end{split} before \end{equation}
if '//' in s1: f1 = "equation*}" f2='/end{equation*}' s3=s1[:s1.index(f1) + len(f1)] + '/begin{split}' + s1[s1.index(f1) + len(f1):] s4= s3[:s3.index(f2)] + '/end{split}' + s3[s3.index(f2):s3.index(f2) + len(f2)]
etc...
I have written a plugin code as so
import sublime, sublime_plugin, re, string #import the required modules
class RonvertCommand(sublime_plugin.TextCommand): #create Text Command
def run(self, edit): #implement run method
for region in self.view.sel(): #get user selection
if not region.empty(): #if selection not empty then
s = self.view.substr(region) #assign s variable the selected region
s4=s.replace("%", "")
# s1=s.replace("eqnarray*", "equation*")
if '\\begin{eqnarray*}' in s4:
s4=s4.replace("eqnarray*", "equation*")
f1 = "equation*}"
s4=s4[:s4.index(f1) + len(f1)] + '\\begin{split}' + s4[s4.index(f1) + len(f1):]
f2='\\end{equation*}'
s4= s4[:s4.index(f2)] + '\end{split}' + s4[s4.index(f2):s4.index(f2) + len(f2)]
if '\\end{eqnarray*}' in s4:
s4=s4.replace("eqnarray*", "equation*")
f2='\\end{equation*}'
s4= s4[:s4.index(f2)] + '\end{split}' + s4[s4.index(f2):s4.index(f2) + len(f2)]
s4=s4.replace("&=&", "&=")
s4=s4.replace("\\left", "")
s4=s4.replace("\\right", "")
s4=s4.replace("( ", "(")
s4=s4.replace(" )", ")")
s4=s4.replace(" }", "}")
s4=s4.replace(" _{", "_{")
s4=s4.replace("[ ", "[")
s4=s4.replace(" ]", "]")
s4=s4.replace("& =", "&=")
s4=s4.replace("+(", "+ (")
# s1 = '\n'.join([' '.join(para.splitlines()) for para in s.split('\n\n')])
self.view.replace(edit, region, s4) #replace content in view
However, I still need to do some steps before I use the plugin and after I use it. This is because I can not simply write \ in python I need to write it as / can anybody help me reach this desirable thing without these mess?
Thank you
I have solved my problem with noticing some nice issues. First realized that before coding it into sublime text 3 plug-in we have to do some tests on python Jupyter notebook. As I mentioned in my question the problem with taking strings in \ is a problematic therefore in sublime text 3 it automaticall transform it to \\ therefore, to do some testing on python it is always better to replace all \ with a \\ and then paste it as a string in python. This what I have done and I was able to fix my problem.
The code goes as follow
import sublime, sublime_plugin, re, string #import the required modules
class RonvertCommand(sublime_plugin.TextCommand): #create Text Command
def run(self, edit): #implement run method
for region in self.view.sel(): #get user selection
if not region.empty(): #if selection not empty then
s = self.view.substr(region) #assign s variable the selected region
s4=s.replace("%", "")
if '\\begin{eqnarray*}' in s4:
s4=s4.replace("eqnarray*", "equation*")
f1 = "equation*}"
s4=s4[:s4.index(f1) + len(f1)] + '\n\t\\begin{split}' + s4[s4.index(f1) + len(f1):]
f2='\\end{equation*}'
s4= s4[:s4.index(f2)] + '\t\\end{split}\n' + s4[s4.index(f2):s4.index(f2) + len(f2)]
ss=s4.split('\n')
while '\\\\' in ss:
a=ss.index('\\\\')
ss[a-1]= ss[a-1] + '\\\\'
del ss[a]
a=ss.index('\t\\end{split}')
ss[a-1]=ss[a-1]+ '\\\\'
for x in range(ss.index('\t\\begin{split}')+1,ss.index('\t\\end{split}')-1):
if x<ss.index('\t\\end{split}')-1:
if '&=&' and '\\\\' not in ss[x]:
ss[x]=ss[x]+ss[x+1]
del ss[x+1]
for x in range(ss.index('\t\\begin{split}')+1,ss.index('\t\\end{split}')):
ss[x]='\t\t'+ ss[x]
s4="\n".join(ss)
elif ('\\[' in s4) or ('\\begin{equation*}' in s4):
s4=s4.replace("\\[","\\begin{equation*}")
s4=s4.replace("\\]","\\end{equation*}")
ss=s4.split('\n')
for x in range(2,len(ss)-1):
ss[1]=ss[1]+ss[x]
ss=[ss[0],ss[1], ss[-1]]
s4="\n".join(ss)
s4=s4[0:s4.index('\n')+1]+'\t'+s4[1+s4.index('\n')::]
# For all the sentences beteween I want to insert two tabs
s4=s4.replace("&=&", "&=")
s4=s4.replace("&&", "&")
s4=s4.replace("\\left", "")
s4=s4.replace("\\right", "")
s4=s4.replace("( ", "(")
s4=s4.replace(" )", ")")
s4=s4.replace(" }", "}")
s4=s4.replace(" _{", "_{")
s4=s4.replace("[ ", "[")
s4=s4.replace(" ]", "]")
s4=s4.replace("& =", "&=")
s4=s4.replace("+(", "+ (")
s4=s4.replace("+\\", "+ \\")
s4=s4.replace("}+", "} +")
s4=s4.replace(") -(", ")-(")
s4=s4.replace(") -(", ")-(")
s4=s4.replace(") (", ")(")
s4=s4.replace(") -", ")-")
s4=s4.replace(") ^", ")^")
s4=s4.replace(") $", ")$")
s4=s4.replace("} +", "}+")
s4=s4.replace("\\text{ and}", "\\qquad\\text{and}\\qquad ")
s4=s4.replace("\\text{ or}", "\\qquad\\text{or}\\qquad ")
s4=s4.replace("\\text{ where}", "\\text{,}\\qquad\\text{where}\\qquad")
if '\\vert' in s4:
Vert = re.findall('vert', s4)
for i in range(0,int(len(Vert)/2)):
A=re.search(r'(\\vert.*?\\vert)', s4).group(1)
s3=re.sub(r"{array}{([a-z])\1+}", "{vmatrix}", A)
s3=re.sub(r"{array}", "{vmatrix}", s3)
s3=s3.replace("\\vert", "")
s4=s4[0:s4.index(A)]+s3+s4[s4.index(A)+len(A):]
s4=s4.replace("\\text{if}", "\\text{if}\\qquad ")
if '(' in s4:
start = '('
end = ')'
A=s4[s4.find(start)+len(start):s4.rfind(end)-1]
if '(' in A:
s4=s4[:s4.find(start)]+'\\Big('+s4[s4.find(start)+len(start):s4.rfind(end)]+'\\Big)'+s4[1+s4.rfind(end)::]
self.view.replace(edit, region, s4)
#replace content in view
# self.view.replace(edit, region, s.count('\n')) #replace content in view
# self.view.insert(edit, 0, s.count('\n'))
Additional steps for Keybindings
1- go to Keybinding (Preference-Key bindings)
2- paste the following:
{"keys": ["alt+x"], "command": "ronvert"},
3- save it and close
now you can select all the text and just apply press alt x on windows
