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/******************************************************************************
*
* Project: GDAL
* Purpose: gdal "main" command
* Author: Even Rouault <even dot rouault at spatialys.com>
*
******************************************************************************
* Copyright (c) 2024, Even Rouault <even dot rouault at spatialys.com>
*
* SPDX-License-Identifier: MIT
****************************************************************************/
#include "gdalalg_main.h"
#include "gdal_priv.h"
//! @cond Doxygen_Suppress
#ifndef _
#define _(x) (x)
#endif
/************************************************************************/
/* GDALMainAlgorithm::GDALMainAlgorithm() */
/************************************************************************/
GDALMainAlgorithm::GDALMainAlgorithm()
: GDALAlgorithm(NAME, DESCRIPTION, HELP_URL)
{
for (const std::string &subAlgName :
GDALGlobalAlgorithmRegistry::GetSingleton().GetNames())
{
const auto pInfo =
GDALGlobalAlgorithmRegistry::GetSingleton().GetInfo(subAlgName);
if (pInfo)
RegisterSubAlgorithm(*pInfo);
}
SetCallPath({NAME});
AddArg("version", 0, _("Display GDAL version and exit"), &m_version)
.SetHiddenForAPI();
AddArg("drivers", 0, _("Display driver list as JSON document"), &m_drivers);
AddOutputStringArg(&m_output);
m_longDescription = "'gdal <FILENAME>' can also be used as a shortcut for "
"'gdal info <FILENAME>'.\n"
"And 'gdal read <FILENAME> ! ...' as a shortcut for "
"'gdal pipeline <FILENAME> ! ...'.";
SetDisplayInJSONUsage(false);
}
/************************************************************************/
/* GDALMainAlgorithm::ParseCommandLineArguments() */
/************************************************************************/
bool GDALMainAlgorithm::ParseCommandLineArguments(
const std::vector<std::string> &args)
{
// Detect shortest form of pipeline:
// "gdal read in.tif ! .... ! write out.tif"
if (args.size() >= 2 && args[0] == "read")
{
m_subAlg =
GDALGlobalAlgorithmRegistry::GetSingleton().Instantiate("pipeline");
if (m_subAlg)
{
bool ret = m_subAlg->ParseCommandLineArguments(args);
if (ret)
{
m_selectedSubAlg = &(m_subAlg->GetActualAlgorithm());
std::vector<std::string> callPath(m_callPath);
callPath.push_back("vector");
m_selectedSubAlg->SetCallPath(callPath);
return true;
}
else if (strstr(CPLGetLastErrorMsg(),
"has both raster and vector content"))
{
m_showUsage = false;
return false;
}
}
return GDALAlgorithm::ParseCommandLineArguments(args);
}
else if (args.size() == 1 && args[0].size() >= 2 && args[0][0] == '-' &&
args[0][1] == '-')
{
return GDALAlgorithm::ParseCommandLineArguments(args);
}
// Generic case: "gdal {subcommand} arguments"
// where subcommand is a known subcommand
else if (args.size() >= 1)
{
const auto nCounter = CPLGetErrorCounter();
if (InstantiateSubAlgorithm(args[0]))
return GDALAlgorithm::ParseCommandLineArguments(args);
if (CPLGetErrorCounter() == nCounter + 1 &&
strstr(CPLGetLastErrorMsg(), "Do you mean"))
{
return false;
}
}
// Otherwise check if that is the shortest form of "gdal read mydataset"
// where "read" is omitted: "gdal in.tif"
{
VSIStatBufL sStat;
for (const auto &arg : args)
{
if (VSIStatL(arg.c_str(), &sStat) == 0)
{
m_subAlg =
GDALGlobalAlgorithmRegistry::GetSingleton().Instantiate(
"info");
if (m_subAlg)
{
bool ret = m_subAlg->ParseCommandLineArguments(args);
if (ret)
{
m_selectedSubAlg = &(m_subAlg->GetActualAlgorithm());
std::vector<std::string> callPath(m_callPath);
callPath.push_back(m_selectedSubAlg->GetArg("layer")
? "vector"
: "raster");
m_selectedSubAlg->SetCallPath(callPath);
return true;
}
else if (strstr(CPLGetLastErrorMsg(),
"has both raster and vector content"))
{
m_showUsage = false;
return false;
}
}
}
}
return GDALAlgorithm::ParseCommandLineArguments(args);
}
}
/************************************************************************/
/* GDALMainAlgorithm::GetUsageForCLI() */
/************************************************************************/
std::string
GDALMainAlgorithm::GetUsageForCLI(bool shortUsage,
const UsageOptions &usageOptions) const
{
if (m_selectedSubAlg)
return m_selectedSubAlg->GetUsageForCLI(shortUsage, usageOptions);
if (m_showUsage)
return GDALAlgorithm::GetUsageForCLI(shortUsage, usageOptions);
return std::string();
}
/************************************************************************/
/* GDALMainAlgorithm::RunImpl() */
/************************************************************************/
bool GDALMainAlgorithm::RunImpl(GDALProgressFunc, void *)
{
if (m_drivers)
{
m_output = GDALPrintDriverList(GDAL_OF_KIND_MASK, true);
}
return true;
}
//! @endcond
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