Overview
VX/STR$ provides a call-compatible implementation of OpenVMS-style string processing functions for x86 and ARM Linux. It ensures that OpenVMS applications can manipulate, compare, and process strings while preserving compatibility with existing logic and execution behavior.
Key Features
• Fully compatible with OpenVMS STR$ APIs.
• Supports string manipulation, searching, formatting, and numeric operations.
• Allows seamless migration of OpenVMS applications that rely on STR$ routines.
• Integrates with VX/RT to provide full OpenVMS string processing capabilities on x86 and ARM Linux.
• Maintains OpenVMS string handling behavior, ensuring consistent results across platforms.
VX/STR$ Callable Routines
| MTH$ API |
Function |
| STR$ADD | Performs addition on string-based numeric data |
| STR$ANALYZE_SDESC | Analyze string descriptor |
| STR$ANALYZE_SDESC_64 | Analyzes a 64-bit string descriptor |
| STR$APPEND | Append strings |
| STR$BYTES_COPIED | Returns the number of bytes copied in a string operation |
| STR$CASE_BLIND_COMPARE | Case insensitive compare |
| STR$COMPARE | Compare strings |
| STR$COMPARE_EQL | Compare for equality |
| STR$COMPARE_MULTI | Compares multiple strings for sorting or validation |
| STR$CONCAT | Concatenate strings |
| STR$COPY_DX | Copy descriptor |
| STR$COPY_DX_TO_R | Copies a descriptor-based string to a right-aligned buffer |
| STR$COPY_R | Copy right-trimmed string |
| STR$COPY_R0 | Copies a right-aligned string without padding |
| STR$COPY_R64 | Copies a right-aligned 64-bit string |
| STR$DIVIDE | Performs division on numeric strings |
| STR$DUPL_CHAR | Duplicate characters |
| STR$ELEMENT | Extract string element |
| STR$FIND_FIRST_IN_SET | Find first match in set |
| STR$FIND_FIRST_NOT_IN_SET | Find first non-match |
| STR$FIND_FIRST_SUBSTRING | Find substring |
| STR$FREE1_DX | Free descriptor |
| STR$GET_TEMPSTR | Allocates a temporary string buffer |
| STR$GET1_DX | Get descriptor |
| STR$GET1_DX_64 | Retrieves a 64-bit descriptor-based string |
| STR$LEFT | Left-align string |
| STR$LEN_EXTR | Extracts the length of a string descriptor |
| STR$LENGTH | Returns the length of a string |
| STR$MATCH_WILD | Wildcard string match |
| STR$MUL | Performs multiplication on numeric strings |
| STR$POINTER | Retrieves a pointer to a string descriptor |
| STR$POS_EXTR | Extract position substring |
| STR$POSITION | Find position in string |
| STR$PREFIX | Add string prefix |
| STR$REPLACE | Replaces a substring within a string |
| STR$RIGHT | Right-align string |
| STR$SETVSLEN | Sets the visual length of a string |
| STR$TRANSLATE | Translates characters in a string based on a mapping table |
| STR$TRIM | Trim string |
| STR$UPCASE | Convert string to uppercase |
Why Use VX/STR$?
• Preserves OpenVMS string processing logic, enabling direct porting of applications.
• Provides full compatibility with OpenVMS STR$ functions, ensuring seamless execution of string-based operations on Linux.
• Supports key OpenVMS string handling tasks, including searching, formatting, and descriptor-based memory management.
• Seamlessly integrates into the VX/RT ecosystem for OpenVMS compatibility on x86 and ARM Linux.
VX/STR$ ensures that OpenVMS applications requiring STR$ services can be migrated without major modifications, preserving productivity and minimizing development costs.
