snark13
737c974400
- Split tests/ (libc feature tests) and examples/ (real apps); shared
app.mk in repo root, was examples/example.mk
- libc/io/* split into libc/{conio,env,errno,file,mouse,string,sys,
time,video}/ — clearer module boundaries
- New examples/mdview/: markdown viewer (Phases 1-5 + light nested
lists). Headers (H1-H4), HR, ulist/olist/quote with nesting via
leading spaces, fenced code blocks, inline emphasis (bold/italic/
underscore/code), wrap/unwrap mode with soft wrap (F2), horizontal
pan (← →) with '>' truncation indicator
- libc additions: scroll() in conio (ESTEX SCROLL), strlwr/strupr,
gets() test
- Makefile updates across tests/ for the new shared app.mk path
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/*
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* errno.c — strerror / perror over the SDCC-provided `errno` global.
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*
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* The message table mirrors the one in solid-c's IO.ASM (we kept the
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* English wording for grep-ability). ESTEX returns codes 0..32 in the
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* meaningful range; anything beyond gets "Unknown error".
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*
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* Note: we deliberately do NOT define `_errno` here — SDCC's
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* z80.lib/errno.rel provides it (a single int in _DATA), and our libc
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* wrappers (read.c, open.c, etc.) just assign to `errno`. This
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* removes the "multiple definition of _errno" link warning.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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/*
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* Stored verbatim — pointers in the lookup table cost 2 bytes each plus
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* the message bytes themselves. Sentinel "" entries pad out gaps so
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* indexing stays direct.
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*/
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static const char *const messages[] = {
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/* 0 */ "No error",
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/* 1 */ "Invalid function",
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/* 2 */ "Invalid drive number",
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/* 3 */ "File not found",
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/* 4 */ "Path not found",
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/* 5 */ "Invalid handle",
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/* 6 */ "Too many open files",
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/* 7 */ "File already exists",
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/* 8 */ "File is read-only",
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/* 9 */ "Root directory overflow",
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/* 10 */ "No free space",
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/* 11 */ "Directory not empty",
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/* 12 */ "Can't delete current directory",
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/* 13 */ "Invalid media",
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/* 14 */ "Unknown operation",
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/* 15 */ "Directory exists",
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/* 16 */ "Invalid filename",
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/* 17 */ "Invalid EXE file",
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/* 18 */ "Not supported EXE file",
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/* 19 */ "Access denied",
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/* 20 */ "Device not ready",
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/* 21 */ "Seek error",
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/* 22 */ "Sector not found",
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/* 23 */ "CRC error",
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/* 24 */ "Write protect",
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/* 25 */ "Read error",
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/* 26 */ "Write error",
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/* 27 */ "Drive failure",
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/* 28 */ "RESERVED",
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/* 29 */ "RESERVED",
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/* 30 */ "Out of memory",
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/* 31 */ "Invalid memory block",
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/* 32 */ "Unknown error",
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};
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const int ESTEX_MAX_ERR = sizeof(messages) / sizeof(messages[0]) - 1;
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const char *strerror(int err)
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{
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if (err < 0 || err > ESTEX_MAX_ERR) {
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err = EUNKERR;
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}
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return messages[err];
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}
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void perror(const char *prefix)
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{
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if (prefix && *prefix) {
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fputs(prefix, stderr);
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fputs(": ", stderr);
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}
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fputs(strerror(errno), stderr);
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fputs("\r\n", stderr);
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}
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