Revision 634f24b487c5e8036f1c1c977686b9d5eb41e6e8 authored by Juergen E. Fischer on 08 July 2016, 12:00:33 UTC, committed by Juergen E. Fischer on 08 July 2016, 12:00:33 UTC
1 parent 6f82713
qgis_srs.sh
#!/bin/sh
###########################################################################
# qgis_srs.sh
# ---------------------
# Date : August 2009
# Copyright : (C) 2009 by Magnus Homann
# Email : magnus at homann dot se
###########################################################################
# #
# This program is free software; you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
###########################################################################
# AUTHOR: Maciej Sieczka, msieczka@sieczka.org, http://www.sieczka.org
#
# PURPOSE: Create a QGIS srs.db-compliant SQL script with SRS, ellipsoid
# and projections defs based on the output of installed PROJ.4 and
# GDAL.
#
# VERSION: 1.1.0, 2009.03.19
#
# COPYRIGHT: (c) 2008,2009 Maciej Sieczka
#
# LICENSE: This program is free software under the GNU General Public
# License (>=v2).
# CHANGELOG:
#
# 1.1.0:
# - Reorganize the code into functions.
# - Support qgis.db convenient update too.
# - Workaround the issue http://trac.osgeo.org/gdal/ticket/2900.
#
# 1.0.3: Minor cosmetics in comments.
#
# 1.0.2: Replace 'latlon' and 'lonlat' in the `proj -le` output, so that QGIS
# can parse the 'tbl_projection' table to provide the GCSs list in the
# 'Projection' dialog (BTW, the dialog should be called 'Coordinate
# system' actually, as a projection is only a component of a cs).
# More comments.
#
# 1.0.1: Typos in comments fixed.
#
# 1.0: First public release.
# USAGE: 1. qgis_srs.sh --full/--tmpl > output.sql
# 2. import output.sql into SQLite Database Browser
# 3. save as a new dbase, name it srs.db (--full) or qgis.db (--tmpl),
# use with QGIS
# DETAILS:
#
# The script creates an SQL plain text dump that can be imported into
# SQlite db eg. using SQLite Database Browser's "Import > Database from
# SQL file" tool.
#
# The ellipsoids (tbl_ellipsoid) and projections (tbl_projection) tables
# are created parsing the proj command output. I chose this approach,
# because looking at the original tables content it seems the original
# tables were created the same way.
#
# The tbl_srs table is created parsing the epsg_tr.py output. EPSG codes
# to process are taken from the installed GDAL's pcs.csv and gcs.csv files.
#
# Tables structure and final SQL statements creating the view and indices
# were copied from the original srs.db shipped with QGIS trunk r8544,
# after dumping it to a plain text format with SQLite Database Browser.
### FUNCTIONS ###
mk_tbl_bookmarks ()
{
# Create bookmarks table:
echo "CREATE TABLE tbl_bookmarks (
bookmark_id integer PRIMARY KEY,
name varchar(255) NOT NULL,
project_name varchar(32),
xmin double,
ymin double,
xmax double,
ymax double,
projection_srid integer
);"
}
mk_tbl_ellps ()
{
# Create ellipsoids table:
echo "CREATE TABLE tbl_ellipsoid (
acronym char(20) NOT NULL default '',
name char(255) NOT NULL default '',
radius char(255) NOT NULL default '',
parameter2 char(255) NOT NULL default '',
PRIMARY KEY (acronym)
);"
}
pop_tbl_ellps ()
{
# Populate ellipsoids table. Care about (possible) apostrophes in strings, which
# would brake the SQL syntax, as the "'" is also a string separator:
proj -le | sed 's/^ *//g' | tr -d "\t" | sed "s/ */ /g" | sed "s/'/''/g" | awk 'BEGIN {sep="'\'','\''"} NF>4 {printf $1 sep $4; for (i=5;i<NF+1;i++) {printf " "$i} print sep $2 sep $3} NF<5 {print $1 sep $4 sep $2 sep $3}' | while read i; do
echo "INSERT INTO tbl_ellipsoid VALUES('"${i}"');"
done
}
mk_tbl_projs ()
{
# Create projections table:
echo "CREATE TABLE tbl_projection (
acronym varchar(20) NOT NULL PRIMARY KEY,
name varchar(255) NOT NULL default '',
notes varchar(255) NOT NULL default '',
parameters varchar(255) NOT NULL default ''
);"
}
pop_tbl_projs ()
{
# Populate projections table:
# Process each proj4 projection acronym...
for i in `proj -l | cut -d" " -f1 | sed -e 's/lonlat/longlat/' -e 's/latlon/latlong/'` ; do
#...to extract it's parameters, making sure not more than 4 fields are created...
proj=`proj -l=$i | tr -d "\t" | sed 's/^ *//g' | sed 's/ : /\n/' | sed "s/'/''/g" | awk '{print "'\''"$0"'\''"}' | tr "\n" "," | sed 's/,$/\n/' | sed "s/','/ /4g"`
#...count the number of parameters...
proj_nf=`echo $proj | awk -F"','" '{print NF}'`
#...if only 3 (3 or 4 are possible) add an empty 4th one.
if [ $proj_nf -eq 3 ] ; then
proj=${proj}",''"
fi
# Create an SQL command for each proj:
echo "INSERT INTO tbl_projection VALUES("${proj}");"
done
}
mk_tbl_srss_srs ()
{
# Create SRSs table for srs.db:
echo "CREATE TABLE tbl_srs (
srs_id INTEGER PRIMARY KEY,
description text NOT NULL,
projection_acronym text NOT NULL,
ellipsoid_acronym NOT NULL,
parameters text NOT NULL,
srid integer NOT NULL,
epsg integer NOT NULL,
is_geo integer NOT NULL
);"
}
mk_tbl_srss_qgis ()
{
# Create SRSs table for qgis.db:
echo "CREATE TABLE tbl_srs (
srs_id INTEGER PRIMARY KEY,
description text NOT NULL,
projection_acronym text NOT NULL,
ellipsoid_acronym NOT NULL,
parameters text NOT NULL,
srid integer NULL,
auth_name varchar NULL,
auth_id varchar NULL,
is_geo integer NOT NULL
);"
}
pop_tbl_srss ()
{
# Populate SRSs table:
gdal_share=`gdal-config --datadir`
no=0
# Extract projected SRSs from the installed GDAL pcs.csv file:
#Find valid EPSG numbers parsing GDAL's pcs.csv:
for i in `awk 'NR>1' ${gdal_share}/pcs.csv | cut -d, -f1`; do
raw=`epsg_tr.py -proj4 $i 2>&1 | tr "\n" " " | sed 's/ <> $//' | grep -v "^ERROR 6: "`
if [ -n "$raw" ]; then
no=`expr $no + 1`
name=`echo $raw | sed 's/^# //' | grep -o "^.\{1,\} <[[:digit:]]\{1,\}>" | sed 's/ <[[:digit:]]\{1,\}>//' | sed "s/'/''/g"`
proj=`echo $raw | grep -o "+proj=[^[:space:]]\{1,\}" | cut -d"=" -f2`
ellps=`echo $raw | grep -o "+ellps=[^[:space:]]\{1,\}" | cut -d"=" -f2`
srs=`echo $raw | grep -o "+proj.\{1,\} +no_defs"`
epsg=`echo $raw | grep -o ' <[[:digit:]]\{1,\}> ' | sed 's/[^[:digit:]]//g'`
isgeo=0
echo "INSERT INTO tbl_srs VALUES(${no},'${name}','${proj}','${ellps}','${srs}',${epsg},${epsg},${isgeo});"
fi
done
# Extract un-projected SRSs from the installed GDAL gcs.csv file:
#Find valid EPSG numbers parsing GDAL's gcs.csv:
for i in `awk 'NR>1' ${gdal_share}/gcs.csv | cut -d, -f1`; do
raw=`epsg_tr.py -proj4 $i 2>&1 | tr "\n" " " | sed 's/ <> $//' | grep -v "^ERROR 6: "`
if [ -n "$raw" ]; then
no=`expr $no + 1`
name=`echo $raw | sed 's/^# //' | grep -o "^.\{1,\} <[[:digit:]]\{1,\}>" | sed 's/ <[[:digit:]]\{1,\}>//' | sed "s/'/''/g"`
proj=`echo $raw | grep -o "+proj=[^[:space:]]\{1,\}" | cut -d"=" -f2`
ellps=`echo $raw | grep -o "+ellps=[^[:space:]]\{1,\}" | cut -d"=" -f2`
srs=`echo $raw | grep -o "+proj.\{1,\} +no_defs"`
epsg=`echo $raw | grep -o ' <[[:digit:]]\{1,\}> ' | sed 's/[^[:digit:]]//g'`
isgeo=1
echo "INSERT INTO tbl_srs VALUES(${no},'${name}','${proj}','${ellps}','${srs}',${epsg},${epsg},${isgeo});"
fi
done
}
mk_view ()
{
# Final SQL statements:
echo "CREATE VIEW vw_srs as
select a.description as description,
a.srs_id as srs_id,
a.is_geo as is_geo,
b.name as name,
a.parameters as parameters,
a.auth_name as auth_name,
a.auth_id as auth_id
from tbl_srs a
inner join tbl_projection b
on a.projection_acronym=b.acronym
order by
b.name, a.description;"
}
usage ()
{
echo "
Usage:
--qgis Create a database to be used as the 'qgis.db' upgraded replacement.
--srs Create a database to be used as the 'srs.db' upgraded replacement.
"
}
### DO IT ###
if [ "$1" = "--qgis" ]; then
echo "BEGIN TRANSACTION;"
mk_tbl_bookmarks
mk_tbl_ellps; pop_tbl_ellps
mk_tbl_projs; pop_tbl_projs
mk_tbl_srss_qgis
mk_view
echo "COMMIT;"
elif [ "$1" = "--srs" ]; then
echo "BEGIN TRANSACTION;"
mk_tbl_ellps; pop_tbl_ellps
mk_tbl_projs; pop_tbl_projs
mk_tbl_srss_srs; pop_tbl_srss
mk_view
echo "CREATE UNIQUE INDEX idx_srsauthid on tbl_srs(auth_name,auth_id);
CREATE UNIQUE INDEX idx_srssrid on tbl_srs(srid);
COMMIT;"
else
usage
fi
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