diff options
Diffstat (limited to 'src/output')
| -rw-r--r-- | src/output/ntux_output_error.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/src/output/ntux_output_error.c b/src/output/ntux_output_error.c new file mode 100644 index 0000000..47858ab --- /dev/null +++ b/src/output/ntux_output_error.c @@ -0,0 +1,217 @@ +/***********************************************************/ +/* ntux: native translation und extension */ +/* Copyright (C) 2016--2018 Z. Gilboa */ +/* Released under GPLv2 and GPLv3; see COPYING.NTUX. */ +/***********************************************************/ + +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <psxabi/sys_errno.h> + +#include <ntux/ntux.h> +#include "ntux_driver_impl.h" +#include "ntux_nolibc_impl.h" +#include "ntux_strerr_impl.h" + +static const char aclr_reset[] = "\x1b[0m"; +static const char aclr_bold[] = "\x1b[1m"; + +static const char aclr_red[] = "\x1b[31m"; +static const char aclr_green[] = "\x1b[32m"; +static const char aclr_blue[] = "\x1b[34m"; +static const char aclr_magenta[] = "\x1b[35m"; + +static const char * ntux_output_error_header(const struct ntux_error_info * erri) +{ + if (erri->eflags & NTUX_ERROR_CHILD) + return "exec error upon"; + + else if (erri->eflags & NTUX_ERROR_TOP_LEVEL) + return "error logged in"; + + else if (erri->eflags & NTUX_ERROR_NESTED) + return "< returned to >"; + + else + return "distorted state"; +} + +static const char * ntux_output_unit_header(const struct ntux_error_info * erri) +{ + if (!(erri->eflags & NTUX_ERROR_CUSTOM)) + return "while opening"; + + else + return "while querying"; +} + +static const char * ntux_output_strerror( + const struct ntux_driver_ctx * dctx, + const struct ntux_error_info * erri) +{ + struct ntux_driver_ctx_impl * ictx; + + if (erri->eflags & NTUX_ERROR_NATIVE) { + ictx = ntux_get_driver_ictx(dctx); + ntux_sprintf(ictx->errsbuf,"system error: 0x%X",erri->elibcode); + return ictx->errsbuf; + } + + if (erri->eflags & NTUX_ERROR_CUSTOM) + return "flow error: unexpected condition or other"; + + else if (erri->eflags & NTUX_ERROR_NESTED) + return ""; + + else if (erri->eflags & NTUX_ERROR_CHILD) + return "(see child process error messages)"; + + else if (erri->esyscode == ENOBUFS) + return "input error: string length exceeds buffer size."; + + else + return ntux_strerror(dctx,erri->esyscode); +} + +static int ntux_output_error_record_plain( + const struct ntux_driver_ctx * dctx, + const struct ntux_error_info * erri) +{ + const char * epath; + const char * errdesc = ntux_output_strerror(dctx,erri); + + epath = erri->euctx + ? *erri->euctx->path + : erri->eunit; + + if (epath && !(erri->eflags & NTUX_ERROR_NESTED)) + if (ntux_fprintf(stderr,"%s: [%s] '%s':\n", + dctx->program, + ntux_output_unit_header(erri), + epath) < 0) + return -1; + + if (fprintf(stderr,"%s: %s %s(), line %d%s%s.\n", + dctx->program, + ntux_output_error_header(erri), + erri->efunction, + erri->eline, + strlen(errdesc) ? ": " : "", + errdesc) < 0) + return -1; + + return fflush(stderr); +} + +static int ntux_output_error_record_annotated( + const struct ntux_driver_ctx * dctx, + const struct ntux_error_info * erri) +{ + const char * epath; + const char * errdesc = ntux_output_strerror(dctx,erri); + + epath = erri->euctx + ? *erri->euctx->path + : erri->eunit; + + if (epath && !(erri->eflags & NTUX_ERROR_NESTED)) + if (ntux_fprintf( + stderr, + "%s%s%s:%s %s[%s]%s %s%s'%s'%s:\n", + + aclr_bold,aclr_magenta, + dctx->program, + aclr_reset, + + aclr_bold, + ntux_output_unit_header(erri), + aclr_reset, + + aclr_bold,aclr_red, + epath, + aclr_reset) < 0) + return -1; + + if (fprintf( + stderr, + "%s%s%s:%s %s%s%s %s%s%s()%s, %s%sline %d%s%s%s%s%s.\n", + + aclr_bold,aclr_magenta, + dctx->program, + aclr_reset, + + aclr_bold, + ntux_output_error_header(erri), + aclr_reset, + + aclr_bold,aclr_blue, + erri->efunction, + aclr_reset, + + aclr_bold,aclr_green, + erri->eline, + aclr_reset, + strlen(errdesc) ? ": " : "", + + aclr_bold, + ntux_output_strerror(dctx,erri), + aclr_reset) < 0) + return -1; + + return fflush(stderr); +} + +int ntux_output_error_record( + const struct ntux_driver_ctx * dctx, + const struct ntux_error_info * erri) +{ + if (dctx->cctx->drvflags & NTUX_DRIVER_ANNOTATE_NEVER) + return ntux_output_error_record_plain(dctx,erri); + + else if (dctx->cctx->drvflags & NTUX_DRIVER_ANNOTATE_ALWAYS) + return ntux_output_error_record_annotated(dctx,erri); + + else if (isatty(STDERR_FILENO)) + return ntux_output_error_record_annotated(dctx,erri); + + else + return ntux_output_error_record_plain(dctx,erri); +} + +static int ntux_output_error_vector_plain(const struct ntux_driver_ctx * dctx) +{ + struct ntux_error_info ** perr; + + for (perr=dctx->errv; *perr; perr++) + if (ntux_output_error_record_plain(dctx,*perr)) + return -1; + + return 0; +} + +static int ntux_output_error_vector_annotated(const struct ntux_driver_ctx * dctx) +{ + struct ntux_error_info ** perr; + + for (perr=dctx->errv; *perr; perr++) + if (ntux_output_error_record_annotated(dctx,*perr)) + return -1; + + return 0; +} + +int ntux_output_error_vector(const struct ntux_driver_ctx * dctx) +{ + if (dctx->cctx->drvflags & NTUX_DRIVER_ANNOTATE_NEVER) + return ntux_output_error_vector_plain(dctx); + + else if (dctx->cctx->drvflags & NTUX_DRIVER_ANNOTATE_ALWAYS) + return ntux_output_error_vector_annotated(dctx); + + else if (isatty(STDERR_FILENO)) + return ntux_output_error_vector_annotated(dctx); + + else + return ntux_output_error_vector_plain(dctx); +} |