On Oct 24, 2010, at 6:52 PM, Nick Dokos wrote:
Carsten Dominik <carsten.domi...@gmail.com> wrote:
Hi Lukasz,
thanks for the patch, but I do not understand it.
The separator for csv is always the comma, or am I wrong here?
So this function should use comma, hard-coded. The only place
where it is used is when orgtbl-to-csv calls the generic
exporter. It does so with comma as separator and with
org-quote-csv-field as formatting function.
What use case do you have in mind?
- Carsten
[This is *not* a comment on the patch itself, which I have not
looked at
carefully.]
CSV started out simple and grew to be a monster (but it is still
useful
despite all that). It's not formally defined, so there are several
variations, dialects and subdialects. Here e.g. is the description of
the python module that handles CSV: it defines an "excel" dialect
and an
"excel_tab" subdialect, the latter using a TAB as a delimiter. If you
want more details and have python installed, start it up, import csv
and
then say "help(csv)".
Thanks for this, useful info. I remember when we implemented csv that
it seemed trivial and was not.
Org-mode does have a separate orgtbl-to-tsv which
handles tab-separated data.
HTH,
Nick
,----
| NAME
| csv - CSV parsing and writing.
|
| FILE
| /usr/lib/python2.5/csv.py
|
| MODULE DOCS
| http://www.python.org/doc/current/lib/module-csv.html
|
| DESCRIPTION
| This module provides classes that assist in the reading and
writing
| of Comma Separated Value (CSV) files, and implements the
interface
| described by PEP 305. Although many CSV files are simple to
parse,
| the format is not formally defined by a stable specification and
| is subtle enough that parsing lines of a CSV file with something
| like line.split(",") is bound to fail. The module supports
three
| basic APIs: reading, writing, and registration of dialects.
|
|
| DIALECT REGISTRATION:
|
| Readers and writers support a dialect argument, which is a
convenient
| handle on a group of settings. When the dialect argument is a
string,
| it identifies one of the dialects previously registered with
the module.
| If it is a class or instance, the attributes of the argument
are used as
| the settings for the reader or writer:
|
| class excel:
| delimiter = ','
| quotechar = '"'
| escapechar = None
| doublequote = True
| skipinitialspace = False
| lineterminator = '\r\n'
| quoting = QUOTE_MINIMAL
|
| SETTINGS:
|
| * quotechar - specifies a one-character string to use as the
| quoting character. It defaults to '"'.
| * delimiter - specifies a one-character string to use as the
| field separator. It defaults to ','.
| * skipinitialspace - specifies how to interpret whitespace
which
| immediately follows a delimiter. It defaults to
False, which
| means that whitespace immediately following a
delimiter is part
| of the following field.
| * lineterminator - specifies the character sequence which
should
| terminate rows.
| * quoting - controls when quotes should be generated by
the writer.
| It can take on any of the following module constants:
|
| csv.QUOTE_MINIMAL means only when required, for
example, when a
| field contains either the quotechar or the delimiter
| csv.QUOTE_ALL means that quotes are always placed
around fields.
| csv.QUOTE_NONNUMERIC means that quotes are always
placed around
| fields which do not parse as integers or floating
point
| numbers.
| csv.QUOTE_NONE means that quotes are never placed
around fields.
| * escapechar - specifies a one-character string used to
escape
| the delimiter when quoting is set to QUOTE_NONE.
| * doublequote - controls the handling of quotes inside
fields. When
| True, two consecutive quotes are interpreted as one
during read,
| and when writing, each quote character embedded in the
data is
| written as two quotes
`----
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