diff --git a/include/fmtmsg.h b/include/fmtmsg.h new file mode 100644 index 0000000..bdc4a52 --- /dev/null +++ b/include/fmtmsg.h @@ -0,0 +1,53 @@ +#ifndef _FMTMSG_H +#define _FMTMSG_H + +/* Major: source of problem */ +#define MM_HARD 0x0001 +#define MM_SOFT 0x0002 +#define MM_FIRM 0x0004 + +/* Source subclassification: code encountering the problem */ +#define MM_APPL 0x0008 +#define MM_UTIL 0x0010 +#define MM_OPSYS 0x0020 + +/* Display subclassification */ +#define MM_PRINT 0x0100 +#define MM_CONSOLE 0x0200 + +/* Can we recover? */ +#define MM_RECOVER 0x0040 +#define MM_NRECOV 0x0080 + +#define MM_NULLMC 0L + +/* Severity */ +#define MM_HALT 0x1 +#define MM_ERROR 0x2 +#define MM_WARNING 0x3 +#define MM_INFO 0x4 +#define MM_NOSEV 0x0 + +/* Return */ +#define MM_OK 0x00000000 +#define MM_NOTOK 0xffffffff +#define MM_NOMSG 0x00000001 +#define MM_NOCON 0x00000004 + +#define MM_NULLLBL (char*)0 +#define MM_NULLTXT (char*)0 +#define MM_NULLACT (char*)0 +#define MM_NULLTAG (char*)0 +#define MM_NULLSEV 0 + + +#ifdef __cplusplus +extern "C" { +#endif +int fmtmsg(long, const char *, int, const char *, const char *, const char *); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/src/misc/fmtmsg.c b/src/misc/fmtmsg.c new file mode 100644 index 0000000..1cc6fdd --- /dev/null +++ b/src/misc/fmtmsg.c @@ -0,0 +1,113 @@ +/* Public domain fmtmsg() + * Written by Isaac Dunham, 2014 + */ +#include +#include +#include +#include +#include +#include + +static char *_msgtok[] = { +"label", "severity", "text", "action", "tag", NULL +}; + +/* + * If lstr is the first part of bstr, check that the next char in bstr + * is either \0 or : + */ +static int _strcolcmp(const char *lstr, const char *bstr) +{ + size_t i = 0; + while (lstr[i] && bstr[i] && (bstr[i] == lstr[i])) i++; + if ( lstr[i] || (bstr[i] && bstr[i] != ':')) return 1; + return 0; +} + +static int _validenv(char *evar) +{ + size_t i; + + while (evar && evar[0]) { + for(i=0; _msgtok[i]; i++) { + if (!_strcolcmp(_msgtok[i], evar)) break; + } + if (_msgtok[i] == NULL) return 0; + evar = strchr(evar, ':'); + if (evar) evar++; + } + return 1; +} + +static int _writemsg(const char *msg) +{ + int buflen = strlen(msg); + if (write(2, msg, buflen) < buflen) return MM_NOMSG; + return 0; +} + +int fmtmsg(long classification, const char *label, int severity, + const char *text, const char *action, const char *tag) +{ + int ret = 0, i = 0, consolefd = 0; + char *errstring = MM_NULLSEV, *cmsg = getenv("MSGVERB"); + + if (classification & MM_CONSOLE) + consolefd = open("/dev/console", O_WRONLY); + if (consolefd < 0) { + classification &= ~MM_CONSOLE; + ret = MM_NOCON; + consolefd = 0; + } + if (severity == MM_HALT) errstring = "HALT"; + else if (severity == MM_ERROR) errstring = "ERROR"; + else if (severity == MM_WARNING) errstring = "WARNING"; + else if (severity == MM_INFO) errstring = "INFO"; + if (consolefd) { + if (dprintf(consolefd, "%s: %s: %s\nTO FIX: %s %s\n", + label, errstring, text, action, tag)<15) + ret = MM_NOCON; + } + + if (cmsg && !_validenv(cmsg)) cmsg = (char *)0; + while ((classification & MM_PRINT) && (i < 6)) { + if (cmsg) i = 0; + while (cmsg && _msgtok[i]) { + if (!_strcolcmp(_msgtok[i], cmsg)) break; + i++; + } + i++; + switch (i) { + case 1: + ret |= _writemsg(label); + ret |= _writemsg(": "); + break; + case 2: + if (errstring){ + ret |= _writemsg(errstring); + ret |= _writemsg(": "); + } + break; + case 3: + ret |= _writemsg(text); + break; + case 4: + ret |= _writemsg("\nTO FIX: "); + ret |= _writemsg(action); + break; + case 5: + ret |= _writemsg(" "); + ret |= _writemsg(tag); + break; + } + if (cmsg) { + cmsg = strchr(cmsg, ':'); + if (cmsg) cmsg++; + if (!cmsg || !cmsg[0]) i = 6; + } + } + if (classification & MM_PRINT) _writemsg("\n"); + if ((ret & (MM_NOCON|MM_NOMSG) ) == (MM_NOCON|MM_NOMSG)) + ret = MM_NOTOK; + return ret; +}