Intel® Quartus® Prime Standard Edition User Guide: Scripting

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ID 683325
Date 9/24/2018
Public
Document Table of Contents
Document Table of Contents x
1. Command Line Scripting 2. Tcl Scripting A. Intel® Quartus® Prime Standard Edition User Guides
1. Command Line Scripting x
1.1. Benefits of Command-Line Executables 1.2. Introductory Example 1.3. Command-Line Scripting Help 1.4. Project Settings with Command-Line Options 1.5. Compilation with quartus_sh --flow 1.6. Text-Based Report Files 1.7. Using Command-Line Executables in Scripts 1.8. Common Scripting Examples 1.9. The QFlow Script 1.10. Document Revision History
1.4. Project Settings with Command-Line Options x
1.4.1. Option Precedence
1.8. Common Scripting Examples x
1.8.1. Create a Project and Apply Constraints 1.8.2. Check Design File Syntax 1.8.3. Create a Project and Synthesize a Netlist Using Netlist Optimizations 1.8.4. Archive and Restore Projects 1.8.5. Perform I/O Assignment Analysis 1.8.6. Update Memory Contents Without Recompiling 1.8.7. Create a Compressed Configuration File 1.8.8. Fit a Design as Quickly as Possible 1.8.9. Fit a Design Using Multiple Seeds
2. Tcl Scripting x
2.1. Tool Command Language 2.2. Intel® Quartus® Prime Tcl Packages 2.3. Intel® Quartus® Prime Tcl API Help 2.4. End-to-End Design Flows 2.5. Creating Projects and Making Assignments 2.6. Compiling Designs 2.7. Reporting 2.8. Timing Analysis 2.9. Automating Script Execution 2.10. Other Scripting Features 2.11. The Intel® Quartus® Prime Tcl Shell in Interactive Mode Example 2.12. The tclsh Shell 2.13. Tcl Scripting Basics 2.14. Tcl Scripting Revision History
2.2. Intel® Quartus® Prime Tcl Packages x
2.2.1. Loading Packages
2.3. Intel® Quartus® Prime Tcl API Help x
2.3.1. Command-Line Options 2.3.2. The Intel® Quartus® Prime Tcl Console Window
2.3.1. Command-Line Options x
2.3.1.1. Run a Tcl Script 2.3.1.2. Interactive Shell Mode 2.3.1.3. Evaluate as Tcl
2.6. Compiling Designs x
2.6.1. The flow Package 2.6.2. Compile All Revisions
2.7. Reporting x
2.7.1. Saving Report Data in csv Format
2.9. Automating Script Execution x
2.9.1. Execution Example 2.9.2. Controlling Processing 2.9.3. Displaying Messages
2.10. Other Scripting Features x
2.10.1. Natural Bus Naming 2.10.2. Short Option Names 2.10.3. Collection Commands 2.10.4. The post_message Command 2.10.5. Accessing Command-Line Arguments 2.10.6. The quartus() Array
2.10.3. Collection Commands x
2.10.3.1. The foreach_in_collection Command 2.10.3.2. The get_collection_size Command
2.10.5. Accessing Command-Line Arguments x
2.10.5.1. The cmdline Package
2.13. Tcl Scripting Basics x
2.13.1. Hello World Example 2.13.2. Variables 2.13.3. Substitutions 2.13.4. Arithmetic 2.13.5. Lists 2.13.6. Arrays 2.13.7. Control Structures 2.13.8. Procedures 2.13.9. File I/O Open a File for Writing Write to a File Read from a File 2.13.10. Syntax and Comments 2.13.11. External References
2.13.3. Substitutions x
2.13.3.1. Variable Value Substitution 2.13.3.2. Nested Command Substitution 2.13.3.3. Backslash Substitution
1. Command Line Scripting
2. Tcl Scripting
A. Intel® Quartus® Prime Standard Edition User Guides

2.13.9. File I/O

Tcl includes commands to read from and write to files. You must open a file before you can read from or write to it, and close it when the read and write operations are done.

To open a file, use the open command; to close a file, use the close command. When you open a file, specify its name and the mode in which to open it. If you do not specify a mode, Tcl defaults to read mode. To write to a file, specify w for write mode.

Open a File for Writing

set output [open myfile.txt w]

Tcl supports other modes, including appending to existing files and reading from and writing to the same file.

The open command returns a file handle to use for read or write access. You can use the puts command to write to a file by specifying a file handle.

Write to a File

set output [open myfile.txt w]
puts $output "This text is written to the file."
close $output

You can read a file one line at a time with the gets command. The following example uses the gets command to read each line of the file and then prints it out with its line number.

Read from a File

set input [open myfile.txt]
set line_num 1
while { [gets $input line] >= 0 } {
	# Process the line of text here
	puts "$line_num: $line"
	incr line_num
}
close $input
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