我必须使用ReportLab
将长格式的文本文档转换为PDF。我的目标是逐页阅读文本文件(文本文件中的1页是可变长度并由换页确定)。然后,对于每个页面,我必须使用页面模板的onPage
功能编写页面的静态部分,同时将动态部分插入到pdf文件的一个或多个页面中。
问题是我的onPage
函数在我为文档调用build
之前未被调用。在阅读文本页面时,动态创建pdf页面的替代解决方案是什么。
以下是尝试编写页面静态内容的脚本部分。
#Globals
formlines = []
header = []
footer = []
detail_lines = []
def processForm():
# First 15 lines header
# Then variable number of detail lines
# Last 15 line footer
header = formlines[0:14]
print "Processing form\n"
footer = formlines[-15:-1]
detail_lines = formlines[15:-15]
def firstPgCanv(c, doc):
# Process header
pract_addr = header[0][0:43] + "\n" + header[1] + "\n" + header[2][0:43]
remit_to = header[8][44:] + "\n" + header[9][44:] + "\n" + header[10][44:]
guar_addr = header[8][1:42] + "\n" + header[9][1:42] + "\n" + header[10][1:42]
c.saveState()
c.translate(.3 * inch, 0 * inch)
tx = c.beginText(.3 * inch,height- .35 * inch)
tx.textLines(header_addr)
c.drawText(tx)
curY = curY - gap
# Create text object
tx = c.beginText(.3 * inch, curY * inch)
tx.textLines(guar_addr)
c.drawText(tx)
tx = c.beginText(4.3 * inch, curY * inch)
tx.textLines(remit_to)
c.drawText(tx)
c.restoreState()
def main(argv=None):
if argv is None:
argv = sys.argv
args = sys.argv[1:]
#Open source file
src_file = sys.argv[1]
dest = sys.argv[2]
dest_file = os.path.join(os.path.dirname(src_file), dest);
f=open(src_file, 'r')
#Document Template
doc = BaseDocTemplate(dest_file,
pagesize=letter,
leftMargin=.3*inch,
rightMargin= .1 * inch,
topMargin= .1 * inch,
bottomMargin=.3 * inch,
showBoundary=1)
# Frames
frameT = Frame(doc.leftMargin + 2*inch, doc.bottomMargin, doc.width - 2.01*inch, doc.height - 4.1*inch, id='normal', showBoundary=0)
frameB = Frame(doc.leftMargin+2, doc.bottomMargin, 7.5*inch, 10*inch, id='small', showBoundary=1)
# Page Templates
doc.addPageTemplates([PageTemplate(id='First',frames=frameT,onPage=firstPgCanv),
PageTemplate(id='Later',frames=frameB,onPage=othPgCanv)
])
Elements = []
# Process the input file
while 1:
ln = f.readline()
if len(ln) == 0: # EOF
break
s = chomp(ln)
ff = s.find("\f")
if ff != -1: # \f found along with first line of next form
frag = s.split("\f")
final = frag.pop()
formlines.append(final)
processForm()
Elements.append(NextPageTemplate('First'))
Elements.append(PageBreak)
# Here I will write few more pages of page Template 'Later'
else:
formlines.append(s)
# EOF -- close and flush last page
f.close()
doc.build(Elements)
if __name__ == "__main__":
sys.exit(main())
答案 0 :(得分:0)
经过一番研究后,我得出结论,没有办法动态处理它。剩下的唯一解决方法是将整个文件访问到列表中。然后onPage
页面模板的功能使用全局变量来跟踪页面#并根据页面#访问相应的列表行。